R-PS Sem Exam Combined Set Flashcards
(434 cards)
1
Q
quantitative observations
A
has numbers
2
Q
King
A
kilo (x 10e3) ( k)
3
Q
The lightbulb is an example of ____.
A
technology
4
Q
The prefix kilo- means ____.
A
1,000
5
Q
What punctuation mark can NEVER follow a hypothesis?
A
A question mark
(A hypothesis is a statement, it is never a question)
6
Q
Rule for determining how many significant figures to keep when multiplying one or more numbers?
A
- Count the significant figures in all the numbers you are multiplying.
- Find the one with the least number of sig figs.
- Keep this many sig figs in your final answer.
7
Q
You use your brain for
A
Inferences
8
Q
Hypothesis
A
An educated and careful guess
9
Q
worldwide system of measurement
A
SI
10
Q
The best type of graph to use to show how some fixed quantity is broken down into parts is_____.
A
circle graph (pie chart)
11
Q
On a multiple choice test, the response “all of the above” means….
A
It means you better read each and every one of the other responses!
12
Q
SI
A
worldwide system of measurement (Systeme International d’unites)
13
Q
If you use your brain, then it is an (obseration/inference)
A
inference
14
Q
Law, Theory, Scientific Fact, or Hypothesis?
It is always a statement.
A
Hypothesis
15
Q
An explanation of an event that is based on repeated observations and experiments is a ____.
A
theory
16
Q
milli-
A
SI prefix meaning 0.001
17
Q
qualitative observation
A
has no numbers
18
Q
kelvin
A
SI unit of temperature
19
Q
meter
A
SI unit of length
20
Q
A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested
A
A Control
21
Q
SI unit of length
A
meter
22
Q
Milk
A
milli (x 10e-3) (m)
23
Q
explanation of a group of related events that is based on extensive observation and experimentation
A
scientific theory
24
Q
prefix milli-
A
0.001
25
If the number has a
**_decimal point...._**
What is the rule for determining the
place value of the uncertain digit?
It is the last digit on the right.
2700. **0**
3. 2**5**
12. 650**0**
2. 34**5** x 103
26
Law, Theory, Scientific Fact, or Hypothesis?
It is always a **_statement._**
Hypothesis
27
A cubic centimeter is also known as either a cc or a \_\_\_\_\_\_\_\_\_\_\_.
milliliter
28
.0080
Which digit above is the uncertain digit?
.008**_0_**
29
plotted on the vertical or y-axis
dependent variable
30
How many significant figures would you keep in your answer to the following problem?
22,300 ÷ 2.004 =
**3**
(22,300 has only 3 sig figs)
31
The amount of material in an object
mass
32
dependent variable is usually plotted on the
vertical or y-axis
33
True or False.
The "Null Hypothesis" predicts that changes in the independent variable will affect the dependent variable.
False
34
Why is it so important for industrial countries to have a standard of measurement?
Measurements can be compared to each other.
35
Rule for determining how many sig figs to keep when adding numbers.
1. Find the uncertain digit in each of the numbers. (It is usually the one on the right, but zeros can be tricky)
2. Examine the place value of each of the uncertain digits you found in step one.
3. Which place value is the largest?
4. Round your final answer to this same place value.
36
SI prefix meaning 0.01
centi-
37
Must be in the form of a statement.
A hypothesis
38
In order to make observations, you must always use...
One of your five senses.
39
You are multiplying the following numbers.
204.1
300
_ x 200.07_
12,250,286.1
How many significant figures should show in your answer?
One significant figure
10,000,000
The number 300 has only one significant figure, so your answer will be limited to one significant figure.
40
You are multiplying the following numbers:
27. 3
0. 077
_x 400.00_
840.84
How many significant figures should show in your answer?
Two significant figures.
840
The number 0.077 has only two significant figures, so the answer should be limited to two significant figures.
41
Law, Theory, Scientific Fact, or Hypothesis?
**_It has many, many parts_**
**Theory**
42
Why do we typically avoid putting "breaks" in the axes of graphs?
It distorts the appearance of the data.
43
The SI unit that is used to measure time is the \_\_\_\_.
second
44
Why do we draw lines between ponts on a line graph?
To represent the expected values of the unmeasured data between the measured points.
45
"I have a theory about that"
Statement by someone who does not understand the difference between a theory and a hypothesis
46
To what decimal place would you round the answer to?
63.313
_-12.1_
51.131
To the tenths place.
51.1
This is a subtraction problem, and 12.1 is accurate only to the tenths place, so you can't go any farther than the tenths place in your answer.
47
Correct symbol for the SI unit of temperature
K (kelvin)
48
SI prefix meaning 0.001
milli-
49
SI unit of mass
kilogram
50
Temperature of absolute zero in Fahrenheit
negative 459.4 (don't memorize this, just know that it is really, really cold)
51
You are doing an experiment to see if ducks fly faster when listening to music with special "duck" headphones.
You equip 300 ducks with these special headphones and measure their flight speed to be 43mph.
You then conclude that ducks do fly faster with headphones.
What is missing?
A control
You would need "A Control" as a basis for comparison. In other words, you would need to measure the flight speed of a group of ducks without headphones. Then you could compare.
52
2000
Which digit above is the uncertain digit?
**_2_**000
53
The prefix milli- means \_\_\_\_.
0.001
54
Why is the unit for speed, m/s, a derived unit?
It is a mathematical combination of two or more units. (meters divided by seconds)
55
Sometimes an experiment has a whole set of hypotheses. The hypothesis that says that changing the independent varialbe will have no effect on the dependent variable is called what?
The Null Hypothesis
56
A factor that does NOT change in an experiment
A constant (aka "controlled variable")
57
A factor that does NOT change in an experiment is the \_\_\_\_.
constant
58
In an experiment to determine whether the popping of popcorn is affected by the temperature at which it is stored, counting the popped kernels is an example of a(n) \_\_\_\_.
quantitative observation
59
To what decimal place would you round the answer to?
0.0620
_-0.0110_
0.0510
To the ten thousandths place.
0.0510
This is a subtraction problem, and both numbers are accurate to the ten thousandths place, so you should write the answer out the the ten thousandths place.
60
Law, Theory, Scientific Fact, or Hypothesis?
It **_must be testable_**
Hypothesis
61
By
\_\_\_\_\_\_(x 10e0) (no prefix because this is the base unit like grams, meters, liters, etc)
62
mass per unit volume
density
63
True value
The result you would get if you could actually make a perfect measurement. (Too bad you can never do that. It is impossible)
64
Temperature of absolute zero in Celsius
negative 273 degrees celsius
65
If you use your senses, then it is an (observation/inference)
observation
66
When do we put "breaks" in the axes of graphs?
When we are willing to live with the distorted appearance of the data so that we can zoom in on a specific region of the data.
67
If you multiply 27.3 x 32, your answer will have how many significant figures?
2
68
Graphs are visual representations of data that help scientists to detect _________ in the data.
patterns
69
SI unit of temperature
kelvin
70
kilo-
SI prefix meaning 1,000
71
Define a "standard" as it is used in the term standard measurement.
An exact quantity that people agree to use for comparison
72
How many significant figures would you keep in your answer to the following problem?
96.3 x 13,310 =
**3**
(96.3 has only 3 sig figs)
73
Any SI unit can be converted to any other SI unit by multiplying by the appropriate ___________ \_\_\_\_\_\_\_\_\_\_\_\_\_.
conversion factor
74
Law, Theory, Scientific Fact, or Hypothesis?
It is a **_description_**
Scientific Law
75
A factor that is manipulated in an experiment to change the dependent variable
independent varialble (aka manipulated variable)
76
measurement standard
exact quantity people agree to use for comparison
77
.008
Which digit above is the uncertain digit?
.00**_8_**
78
m
The greek letter "mu" (pronounced "mew" like a cat might say)
79
Mix
micro (x 10e-6) (\_)
80
Henry
hecto (x 10e2) (h)
81
To what decimal place would you round the answer to?
16.85
_+3312_
3328.85
The ones place.
**3329**
This is an addition problem, and 3312 is accurate only to the ones place, so you have to round your answer to the ones place.
82
Representation of an idea, event, or object that can help people better understand it.
Model
83
A factor that is manipulated in an experiment to change the dependent variable is the \_\_\_\_.
independent variable
84
If a number has a
zero with a line over it...
Where is the uncertain digit?
(This is an important exception to some other rules you might see on these flash cards.
The zero with the line over it is the uncertain digit.
85
kilogram
SI unit of mass
86
Law, Theory, Scientific Fact, or Hypothesis?
**_When a part of it is refuted by an experiment, that part is changed to make that one part better._**
**Theory**
87
variable usually plotted on the horizontal or x-axis
independent varialble (aka manipulated variable)
88
Accuracy
How close a measurement is to the true value or even the accepted value.
89
First step in designing an experiment
State the problem
90
Studying the effect of one thing on another in order to test a hypothesis is a(n) \_\_\_\_.
experiment
91
"aka" means
also known as
92
Why is a cubic centimeter a derived unit?
It\_s a mathematical combination of two or more units. (cm x cm x cm)
93
derived unit of volume
cubic centimeter
94
Abbreviation for the International System of Units
SI
95
Rule for determining the number of sig figs to keep when you are dividing numbers.
1. Count the significant figures in all the numbers you are dividing.
2. Find the one with the least number of sig figs.
3. Keep this many sig figs in your final answer.
96
SI unit of time
second
97
nano
SI prefix meaning one billionth of (x 10e-9)
98
factor in an experiment that changes from the manipulation of the independent variable
dependent variable
99
micro
SI prefix meaning one millionth of (x 10e-6)
100
(Laws/Theories) are small (can be fully described in a few sentences or a mathematical formula
Laws
101
Another term for technology is \_\_\_\_.
applied science
102
How many significant figures would you keep in your answer to the following problem?
47.3 x 83,312 =
3
103
Amount of space occupied by an object
volume
104
"IM DR" is a mnemonic device to help remember
(Independent variable = Manipulated variable) and (Dependent variable = Responding Variable)
105
Nuggets
(x 10e-9)
106
Why are the points on a bar graph not connected?
There is no data between points that could be graphed.
107
Precision
How closely measurements are too each other.
108
The correct symbol for the SI unit of temperature is \_\_\_\_.
K
109
Why don't we draw lines between bars on a bar graph?
There is no data between the bars on a bar graph.
110
SI prefix meaning 1,000
kilo-
111
A beaker contains 0.32 L of water. What is the volume of this water in milliliters?
320 mL
112
To what decimal place would you round the answer to?
6.03
_+12.002_
18.032
To the hundredths place.
18.03
This is an addition problem, and 6.03 is accurate only to the hundredths place, so you can't go any farther than the hundredths place in your answer.
113
Law, Theory, Scientific Fact, or Hypothesis?
**_It is BIG_**
**Theory**
114
Scientific Method
An organized set of investigation procedures.
115
What is the definition of a derived unit?
A mathematical combination of two or more units.
116
(Laws/Theories) are big usually developed by many scientists working over years or decades.
Laws.
117
Temperature of absolute zero in kelvin
0 degrees Kelvin
118
Hanging Indent
A formatting style Mr. Bixel likes us to use on our labs.
119
670.45
Which digit above is the uncertain digit?
670.4**_5_**
120
A factor in an experiment that changes from the manipulation of the independent variable is the\_\_\_\_\_.
dependent variable
121
How many significant figures would you keep in your answer to the following problem?
0.331 x 0.2473 =
**3**
(0.331 has the least number of sig figs in this multiplication problem)
122
Explain how the lack of a control in an experiment impacts the experiment.
Without a control, there is no basis for comparison.
123
Law, Theory, Scientific Fact, or Hypothesis?
It is "small."
Scientific Law
124
On a test or quiz, what does "All of these" mean?
It means that only a silly person would pick an answer without reading ALL of the answers.
125
centi-
SI prefix meaning 0.01
126
The Null Hypothesis predicts what relationship between the independent and dependent variables?
No relationship at all.
(Changine the independent variable has not effect on the dependent variable.)
127
Arrange in order from smallest to largest. (cm, km, m, mm, nm
nm, mm, cm, m, km
128
When designing an experiment, the first step is to \_\_\_\_.
state the problem
129
mass
amount of material in an object
130
independent variable is aka
manipulated variable (IM DR)
131
SI system is based upon multiples of
10
132
graph type used to show some fixed quantity broken down into parts
circle graph (pie chart)
133
Law, Theory, Scientific Fact, or Hypothesis?
**_A single experiment cannot ever prove it correct, but it can support it._**
Hypothesis
134
cubic centimeter
derived unit of volume
| (its a cube with 1 cm sides)
135
To what decimal place would you round the answer to?
6.03
_+12.002_
18.032
To the hundredths place.
18.03
This is an addition problem, and 6.03 is accurate only to the hundredths place, so you can't go any farther than the hundredths place in your answer.
136
An idea, event, or object can be represented by a ____ to help people better understand it.
model
137
Studying the effect of one thing on another in order to test a hypothesis is a(n) \_\_\_\_.
experiment
138
Observation or Inference?
"The sky looks blue today"
Observation
| (You used one of your five senses)
139
"I have a hypothesis about that"
Statement by someone who does understand the difference between a theory and a hypothesis
140
quantitative observations
has numbers
141
King
kilo (x 10e3) ( k)
142
The lightbulb is an example of \_\_\_\_.
technology
143
The prefix kilo- means \_\_\_\_.
1,000
144
What punctuation mark can NEVER follow a hypothesis?
A question mark
(A hypothesis is a statement, it is never a question)
145
Rule for determining how many significant figures to keep when multiplying one or more numbers?
1. Count the significant figures in all the numbers you are multiplying.
2. Find the one with the least number of sig figs.
3. Keep this many sig figs in your final answer.
146
You use your brain for
Inferences
147
Hypothesis
An educated and careful guess
148
worldwide system of measurement
SI
149
The best type of graph to use to show how some fixed quantity is broken down into parts is\_\_\_\_\_.
circle graph (pie chart)
150
On a multiple choice test, the response "all of the above" means....
It means you better read each and every one of the other responses!
151
SI
worldwide system of measurement (**_S_**ysteme **_I_**nternational d'unites)
152
If you use your brain, then it is an (obseration/inference)
inference
153
Law, Theory, Scientific Fact, or Hypothesis?
It is always a **_statement._**
Hypothesis
154
An explanation of an event that is based on repeated observations and experiments is a \_\_\_\_.
theory
155
milli-
SI prefix meaning 0.001
156
qualitative observation
has **no** numbers
157
kelvin
SI unit of temperature
158
meter
SI unit of length
159
A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested
A Control
160
SI unit of length
meter
161
Milk
milli (x 10e-3) (m)
162
explanation of a group of related events that is based on extensive observation and experimentation
scientific theory
163
prefix milli-
0.001
164
If the number has a
**_decimal point...._**
What is the rule for determining the
place value of the uncertain digit?
It is the last digit on the right.
2700. **0**
3. 2**5**
12. 650**0**
2. 34**5** x 103
165
Law, Theory, Scientific Fact, or Hypothesis?
It is always a **_statement._**
Hypothesis
166
A cubic centimeter is also known as either a cc or a \_\_\_\_\_\_\_\_\_\_\_.
milliliter
167
.0080
Which digit above is the uncertain digit?
.008**_0_**
168
plotted on the vertical or y-axis
dependent variable
169
How many significant figures would you keep in your answer to the following problem?
22,300 ÷ 2.004 =
**3**
(22,300 has only 3 sig figs)
170
The amount of material in an object
mass
171
dependent variable is usually plotted on the
vertical or y-axis
172
True or False.
The "Null Hypothesis" predicts that changes in the independent variable will affect the dependent variable.
False
173
Why is it so important for industrial countries to have a standard of measurement?
Measurements can be compared to each other.
174
Rule for determining how many sig figs to keep when adding numbers.
1. Find the uncertain digit in each of the numbers. (It is usually the one on the right, but zeros can be tricky)
2. Examine the place value of each of the uncertain digits you found in step one.
3. Which place value is the largest?
4. Round your final answer to this same place value.
175
SI prefix meaning 0.01
centi-
176
Must be in the form of a statement.
A hypothesis
177
In order to make observations, you must always use...
One of your five senses.
178
You are multiplying the following numbers.
204.1
300
_ x 200.07_
12,250,286.1
How many significant figures should show in your answer?
One significant figure
10,000,000
The number 300 has only one significant figure, so your answer will be limited to one significant figure.
179
You are multiplying the following numbers:
27. 3
0. 077
_x 400.00_
840.84
How many significant figures should show in your answer?
Two significant figures.
840
The number 0.077 has only two significant figures, so the answer should be limited to two significant figures.
180
Law, Theory, Scientific Fact, or Hypothesis?
**_It has many, many parts_**
**Theory**
181
Why do we typically avoid putting "breaks" in the axes of graphs?
It distorts the appearance of the data.
182
The SI unit that is used to measure time is the \_\_\_\_.
second
183
Why do we draw lines between ponts on a line graph?
To represent the expected values of the unmeasured data between the measured points.
184
"I have a theory about that"
Statement by someone who does not understand the difference between a theory and a hypothesis
185
To what decimal place would you round the answer to?
63.313
_-12.1_
51.131
To the tenths place.
51.1
This is a subtraction problem, and 12.1 is accurate only to the tenths place, so you can't go any farther than the tenths place in your answer.
186
Correct symbol for the SI unit of temperature
K (kelvin)
187
SI prefix meaning 0.001
milli-
188
SI unit of mass
kilogram
189
Temperature of absolute zero in Fahrenheit
negative 459.4 (don't memorize this, just know that it is really, really cold)
190
You are doing an experiment to see if ducks fly faster when listening to music with special "duck" headphones.
You equip 300 ducks with these special headphones and measure their flight speed to be 43mph.
You then conclude that ducks do fly faster with headphones.
What is missing?
A control
You would need "A Control" as a basis for comparison. In other words, you would need to measure the flight speed of a group of ducks without headphones. Then you could compare.
191
2000
Which digit above is the uncertain digit?
**_2_**000
192
The prefix milli- means \_\_\_\_.
0.001
193
Why is the unit for speed, m/s, a derived unit?
It is a mathematical combination of two or more units. (meters divided by seconds)
194
Sometimes an experiment has a whole set of hypotheses. The hypothesis that says that changing the independent varialbe will have no effect on the dependent variable is called what?
The Null Hypothesis
195
A factor that does NOT change in an experiment
A constant (aka "controlled variable")
196
A factor that does NOT change in an experiment is the \_\_\_\_.
constant
197
In an experiment to determine whether the popping of popcorn is affected by the temperature at which it is stored, counting the popped kernels is an example of a(n) \_\_\_\_.
quantitative observation
198
To what decimal place would you round the answer to?
0.0620
_-0.0110_
0.0510
To the ten thousandths place.
0.0510
This is a subtraction problem, and both numbers are accurate to the ten thousandths place, so you should write the answer out the the ten thousandths place.
199
Law, Theory, Scientific Fact, or Hypothesis?
It **_must be testable_**
Hypothesis
200
By
\_\_\_\_\_\_(x 10e0) (no prefix because this is the base unit like grams, meters, liters, etc)
201
mass per unit volume
density
202
True value
The result you would get if you could actually make a perfect measurement. (Too bad you can never do that. It is impossible)
203
Temperature of absolute zero in Celsius
negative 273 degrees celsius
204
If you use your senses, then it is an (observation/inference)
observation
205
When do we put "breaks" in the axes of graphs?
When we are willing to live with the distorted appearance of the data so that we can zoom in on a specific region of the data.
206
If you multiply 27.3 x 32, your answer will have how many significant figures?
2
207
Graphs are visual representations of data that help scientists to detect _________ in the data.
patterns
208
SI unit of temperature
kelvin
209
kilo-
SI prefix meaning 1,000
210
Define a "standard" as it is used in the term standard measurement.
An exact quantity that people agree to use for comparison
211
How many significant figures would you keep in your answer to the following problem?
96.3 x 13,310 =
**3**
(96.3 has only 3 sig figs)
212
Any SI unit can be converted to any other SI unit by multiplying by the appropriate ___________ \_\_\_\_\_\_\_\_\_\_\_\_\_.
conversion factor
213
Law, Theory, Scientific Fact, or Hypothesis?
It is a **_description_**
Scientific Law
214
A factor that is manipulated in an experiment to change the dependent variable
independent varialble (aka manipulated variable)
215
measurement standard
exact quantity people agree to use for comparison
216
.008
Which digit above is the uncertain digit?
.00**_8_**
217
m
The greek letter "mu" (pronounced "mew" like a cat might say)
218
Mix
micro (x 10e-6) (\_)
219
Henry
hecto (x 10e2) (h)
220
To what decimal place would you round the answer to?
16.85
_+3312_
3328.85
The ones place.
**3329**
This is an addition problem, and 3312 is accurate only to the ones place, so you have to round your answer to the ones place.
221
Representation of an idea, event, or object that can help people better understand it.
Model
222
A factor that is manipulated in an experiment to change the dependent variable is the \_\_\_\_.
independent variable
223
If a number has a
zero with a line over it...
Where is the uncertain digit?
(This is an important exception to some other rules you might see on these flash cards.
The zero with the line over it is the uncertain digit.
224
kilogram
SI unit of mass
225
Law, Theory, Scientific Fact, or Hypothesis?
**_When a part of it is refuted by an experiment, that part is changed to make that one part better._**
**Theory**
226
variable usually plotted on the horizontal or x-axis
independent varialble (aka manipulated variable)
227
Accuracy
How close a measurement is to the true value or even the accepted value.
228
First step in designing an experiment
State the problem
229
Studying the effect of one thing on another in order to test a hypothesis is a(n) \_\_\_\_.
experiment
230
"aka" means
also known as
231
Why is a cubic centimeter a derived unit?
It\_s a mathematical combination of two or more units. (cm x cm x cm)
232
derived unit of volume
cubic centimeter
233
Abbreviation for the International System of Units
SI
234
Rule for determining the number of sig figs to keep when you are dividing numbers.
1. Count the significant figures in all the numbers you are dividing.
2. Find the one with the least number of sig figs.
3. Keep this many sig figs in your final answer.
235
SI unit of time
second
236
nano
SI prefix meaning one billionth of (x 10e-9)
237
factor in an experiment that changes from the manipulation of the independent variable
dependent variable
238
micro
SI prefix meaning one millionth of (x 10e-6)
239
(Laws/Theories) are small (can be fully described in a few sentences or a mathematical formula
Laws
240
Another term for technology is \_\_\_\_.
applied science
241
How many significant figures would you keep in your answer to the following problem?
47.3 x 83,312 =
3
242
Amount of space occupied by an object
volume
243
"IM DR" is a mnemonic device to help remember
(Independent variable = Manipulated variable) and (Dependent variable = Responding Variable)
244
Nuggets
(x 10e-9)
245
Why are the points on a bar graph not connected?
There is no data between points that could be graphed.
246
Precision
How closely measurements are too each other.
247
The correct symbol for the SI unit of temperature is \_\_\_\_.
K
248
Why don't we draw lines between bars on a bar graph?
There is no data between the bars on a bar graph.
249
SI prefix meaning 1,000
kilo-
250
A beaker contains 0.32 L of water. What is the volume of this water in milliliters?
320 mL
251
To what decimal place would you round the answer to?
6.03
_+12.002_
18.032
To the hundredths place.
18.03
This is an addition problem, and 6.03 is accurate only to the hundredths place, so you can't go any farther than the hundredths place in your answer.
252
Law, Theory, Scientific Fact, or Hypothesis?
**_It is BIG_**
**Theory**
253
Scientific Method
An organized set of investigation procedures.
254
What is the definition of a derived unit?
A mathematical combination of two or more units.
255
(Laws/Theories) are big usually developed by many scientists working over years or decades.
Theories
256
Temperature of absolute zero in kelvin
0 degrees Kelvin
257
Hanging Indent
A formatting style Mr. Bixel likes us to use on our labs.
258
670.45
Which digit above is the uncertain digit?
670.4**_5_**
259
A factor in an experiment that changes from the manipulation of the independent variable is the\_\_\_\_\_.
dependent variable
260
How many significant figures would you keep in your answer to the following problem?
0.331 x 0.2473 =
**3**
(0.331 has the least number of sig figs in this multiplication problem)
261
Explain how the lack of a control in an experiment impacts the experiment.
Without a control, there is no basis for comparison.
262
Law, Theory, Scientific Fact, or Hypothesis?
It is "small."
Scientific Law
263
On a test or quiz, what does "All of these" mean?
It means that only a silly person would pick an answer without reading ALL of the answers.
264
centi-
SI prefix meaning 0.01
265
The Null Hypothesis predicts what relationship between the independent and dependent variables?
No relationship at all.
(Changine the independent variable has not effect on the dependent variable.)
266
Arrange in order from smallest to largest. (cm, km, m, mm, nm
nm, mm, cm, m, km
267
When designing an experiment, the first step is to \_\_\_\_.
state the problem
268
mass
amount of material in an object
269
independent variable is aka
manipulated variable (IM DR)
270
SI system is based upon multiples of
10
271
graph type used to show some fixed quantity broken down into parts
circle graph (pie chart)
272
Law, Theory, Scientific Fact, or Hypothesis?
**_A single experiment cannot ever prove it correct, but it can support it._**
Hypothesis
273
cubic centimeter
derived unit of volume
| (its a cube with 1 cm sides)
274
To what decimal place would you round the answer to?
6.03
_+12.002_
18.032
To the hundredths place.
18.03
This is an addition problem, and 6.03 is accurate only to the hundredths place, so you can't go any farther than the hundredths place in your answer.
275
An idea, event, or object can be represented by a ____ to help people better understand it.
model
276
Studying the effect of one thing on another in order to test a hypothesis is a(n) \_\_\_\_.
experiment
277
Observation or Inference?
"The sky looks blue today"
Observation
| (You used one of your five senses)
278
"I have a hypothesis about that"
Statement by someone who does understand the difference between a theory and a hypothesis
279
The amount of matter in an object.
Mass
280
kilogram
Is a unit of?
Mass
281
newton
Is a unit of?
Force
282
meter
Is a unit of?
Distance
283
inch
Is a unit of?
Distance
284
kg m/sec
Is a unit of?
Momentum
285
grams x miles/hr
Is a unit of?
Momentum
286
m/(s x s)
Is a unit of?
Acceleration
287
m/s2
Is a unit of?
Acceleration
288
m/s
Is a unit of?
Speed
289
m/s - North
Is a unit of?
Velocity
290
miles/hr
Is a unit of?
Speed
291
cm/day
Is a unit of?
Speed
292
miles East
Is a unit of?
Displacement
293
miles/hr - West
Is a unit of?
Velocity
294
m/s SouthEast
Is a unit of?
Velocity
295
Pounds
Is a unit of?
Force
296
kiloNewtons
Is a unit of?
Force
297
milliNewtons
Is a unit of?
Force
298
A force is a
Push or a Pull
299
Normal Force means a force ___________ to a surface
Perpendicular
300
Normal
Perpendicular
301
Another way to say perpendicular
Normal
302
How can you determine the direction in which friction acts upon a moving object
Friction will act in the direction opposite of the motion of the object.
303
Definition of Mass
The amount of matter in an object.
(Each time you add an atom to an object, you add mass)
304
Definition of Weight
The force of gravity upon an object.
305
Mass and Weight mean ____________ things.
Different
306
Formula for finding Weight
Weight = ___________ x \_\_\_\_\_\_\_\_\_\_\_\_
Weight = mass x gravity
307
What is this thing?
(scroll down and look at entire picture)
Your secret weapon to get 4 questions right on the upcoming test.
308
What can this tell you about mass and weight?
The Earth's gravity applies a force of
9.8-Newtons to a 1-kg mass
309
If you took this thingy to the moon and looked at it, the mass would \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?
Stay the same.
The 1-kg label on th object will still say 1-kg, and it will still be correct.
310
If you took this thingy to the moon and looked at it, the weight would \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?
Go down.
The moon has less gravity, so the red needle would only point to about 2.
311
What can this thingy tell you about weight?
Weight is a force.
312
The force of gravity upon an object
weight
313
Two definitions of acceleration
Change in speed or direction
or
Change in Velociy
314
Formula for acceleration
Accleration =
Acceleration = change in velocity/change in time
can also be written as:
a = Δv / Δt
315
Mass means pretty much the same thing as \_\_\_\_\_\_\_\_
Inertia
316
If there is no air friction, which would experience a greater acceleration when dropped off a cliff, a large rock or a small rock?
Neither, both would accelerate at the same rate, and both would reach the ground at the same time.
317
Gravitational Field Strength near the Earth's surface
9.8 newtons/kilogram
318
The word "static" means....
at rest
319
Static Friction means
The force of friction preventing a motionless object from moving.
320
Sliding Fricition means...
The force of friction impeding the motion of an object sliding across a surface.
321
Air Friction
The force of friction impeding the motion of an object fighting its way through the air.
(It has to bump the air molecules out of the way)
322
You can reduce the friction between to sliding surfaces by coating the surfaces with a \_\_\_\_\_\_\_\_\_\_\_\_\_\_.
Lubricant
(oil, grease. etc)
323
What are these things?
Ball Bearings
324
What would happen to your mass if you left Earth and went to Jupiter?
Nothing.
Mass is a measure of how much "stuff" or matter there is in an object.
325
What would happen to your weight if you left Earth and went to Jupiter?
Your weight would go up.
Jupiter has a much stronger gravitational field than the Earth. Weight is the pull of gravity upon an object.
326
Interaction
When two objecst have an effect upon each other.
327
Three most common types of interaction
Touch
Gravity
Friction
328
329
\_\_\_\_\_\_\_\_\_\_\_\_\_\_ is a science word. It is used to sort of describe how much of an impact an object might make in a collision.
Momentum.
Momentum = Mass x Velocity
330
Definition of Mass
The amount of matter in an object.
(Each time you add an atom to an object, you add mass)
331
Definition of Weight
The force of gravity upon an object.
332
Mass and Weight mean ____________ things.
Different
333
Formula for finding Weight
Weight = ___________ x \_\_\_\_\_\_\_\_\_\_\_\_
Weight = mass x gravity
334
What is this thing?
(scroll down and look at entire picture)
Your secret weapon to get 4 questions right on the upcoming test.
335
What can this tell you about mass and weight?
The Earth's gravity applies a force of
9.8-Newtons to a 1-kg mass
336
If you took this thingy to the moon and looked at it, the mass would \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?
Stay the same.
The 1-kg label on th object will still say 1-kg, and it will still be correct.
337
If you took this thingy to the moon and looked at it, the weight would \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?
Go down.
The moon has less gravity, so the red needle would only point to about 2.
338
What can this thingy tell you about weight?
Weight is a force.
339
The force of gravity upon an object
weight
340
Two definitions of acceleration
Change in speed or direction
or
Change in Velociy
341
Formula for acceleration
Accleration =
Acceleration = change in velocity/change in time
can also be written as:
a = Δv / Δt
342
Mass means pretty much the same thing as \_\_\_\_\_\_\_\_
Inertia
343
If there is no air friction, which would experience a greater acceleration when dropped off a cliff, a large rock or a small rock?
Neither, both would accelerate at the same rate, and both would reach the ground at the same time.
344
Gravitational Field Strength near the Earth's surface
9.8 newtons/kilogram
345
The word "static" means....
at rest
346
Static Friction means
The force of friction preventing a motionless object from moving.
347
Sliding Fricition means...
The force of friction impeding the motion of an object sliding across a surface.
348
Air Friction
The force of friction impeding the motion of an object fighting its way through the air.
(It has to bump the air molecules out of the way)
349
You can reduce the friction between to sliding surfaces by coating the surfaces with a \_\_\_\_\_\_\_\_\_\_\_\_\_\_.
Lubricant
(oil, grease. etc)
350
What are these things?
Ball Bearings
351
What would happen to your mass if you left Earth and went to Jupiter?
Nothing.
Mass is a measure of how much "stuff" or matter there is in an object.
352
What would happen to your weight if you left Earth and went to Jupiter?
Your weight would go up.
Jupiter has a much stronger gravitational field than the Earth. Weight is the pull of gravity upon an object.
353
Interaction
When two objecst have an effect upon each other.
354
Three most common types of interaction
Touch
Gravity
Friction
355
What does this stand for?
ΣF
Sum of Forces
356
Sum of Forces, or ΣF, means the same thing as:
Net Force
357
Friction
The force impeding the motion of an object scraping across a surface or plowing through the air.
358
Kinetic Friction
The force impeding the motion of a moving object.
359
Net Force
The overall force that remains after all "cancelling" of forces has been taken into account.
360
Unbalanced Force means that the Net force is \_\_\_\_\_\_\_\_\_\_\_.
Non-Zero
361
Normal Force
A force at right angles to a surface
362
A force that is perpendicular to a surface
Normal Force
363
Equilibrium
When all forces upon an object cancel out.
364
If an object has a **_constant velocity_**, what other things do you know?
**Net Force = Zero**
**Acceleration = Zero**
**Sum of Forces = Zero**
**Its in Mechanical Equilibrium**
365
If an object has a **_Net Force = Zero_**, what other things do you know?
**It has a constant velocity**
**Acceleration = Zero**
**Sum of Forces = Zero**
**Its in Mechanical Equilibrium**
366
If an object has an **_acceleration of zero_** what other things do you know?
**It has a constant velocity**
**Net Force = Zero**
**Sum of Forces = Zero**
**Its in Mechanical Equilibrium**
367
If the **_Sum of Forces_** upon an object is zero, what other things do you know?
**It has a constant velocity**
**Net Force = Zero**
**Acceleration = Zero**
**Its in Mechanical Equilibrium**
368
If an object is in equilibrium, what other things do you know?
**It has a constant velocity**
**Net Force = Zero**
**Acceleration = Zero**
**Sum of Forces = Zero**
369
Uniform Acceleration
A constant, steady acceleration caused by a constant, steady net force.
(Hint, in high school science, all accelerations studied will be uniform.
370
An object is in free fall when....
the only force acting upon it is gravity.
(The object could be going up, sideways, or down)
371
An object has been thrown upward. The only force acting upon the object is gravity. We would say that this object is...
in free fall.
372
An object has been thrown sideways off of a cliff. The only force acting upon the object is gravity. We would say that this object is...
in free fall.
373
An object that is "falling freely" is
in free fall.
(Has only one force acting upon it...gravity)
374
Resistance
The act of opposing something.
375
Air resistance
The force, caused by the air, opposing the motion of an object.
376
Gravity
A force that exists between ANY two objects that have mass.
377
Earth's Gravitational Field
The area around the Earth that is influenced by the Earth's gravity.
(Put an object in Earth's gravitational field and it will tend to "fall" toward the Earth)
378
Moon's Gravitational Field
The area around the Moon that is influenced by the Moon's gravity.
(Put an object in the Moon's gravitational field and it will tend to "fall" toward the Moon)
379
Jupiters's Gravitational Field
The area around Jupiter that is influenced by Jupiter's gravity.
(Put an object in Jupiter's gravitational field and it will tend to "fall" toward Jupiter)
380
What is the strength of Earth's gravitational Field
9.8 N/kg
This means that the Earth will apply a gravitational force of 9.8 newtons for every 1 kilogram of mass.
381
Inclined Plane
A hill.
(A plane is a flat surface. If it is inclined, you have a hill)
The purple part below.
382
Inclined Ramp
An angled surface you might push or pull an object up.
In the picture below, the box is being pulled up the green "Inclined Ramp."
383
Both of these cars were going 35-mph before the collision, why did the Smart Car lose?
Momentum = Mass x Velocity
The smart car has less mass, so it has less momentum.
384
What are these?
These are the SI fundamental units.
385
What are the fundamental units of speed?
meters / second
386
What are the fundamental units of force?
kg • m/s2
(Kilograms times meters per second squared)
(notice that this is a combination of the fundamental units in the table below)
387
What are the fundamental units of time?
s
| (seconds)
388
What are the fundamental units of acceleration?
**m/s2**
(meters per second squared)
(notice that this is made up of "fundamental units" from the table below)
389
Reaction Time
The interval between a stimulus and your response.
Example:
The time between when you see a mouse and when you scream.
390
What are the fundamental units of mass?
**kg**
| (kilograms)
391
"At Rest"
Not moving
392
"follows a straight-line-path"
moves in a straight line
393
Inertia
An object's resistance to a change in velocity.
(Means almost the same thing as mass)
394
Density
mass/volume
395
Order the following items from least dense to most dense.
Rock
Styrofoam
Lead
Water
Styrofoam
Water
Rock
Lead
396
Volume
How much space an object takes up.
397
What is the "water displacement method" for determining the volume of an object?
Put water in a container. Submerge the object in the water. See how much the water rises.
398
"Weigh an Object"
Using **_a scale_** to find out how much gravity is pulling down upon an object.
(Note: the reading on the scale would change if you went to the moon.)
399
"Mass an Object"
Using a balance to determine the mass of an object.
(Note: if you took this to the moon, the balance would still read the same amount. Why?)
400
Constant Speed
**Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! **
**Net Force = 0
Sum of Forces = 0
Its in Equilibrium
Newton's First Law
Acceleration = 0**
401
Blah blah blah blah blah bladdady blah constant speed blah blah blah blah blah blah yada blah.
**Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!**
**Net Force = 0
Sum of Forces = 0
Its in Equilibrium
Newton's First Law
Acceleration = 0**
402
Yadda blah, yackity yack blahdidy blah, at a constant velocity blah yaddidy blah yabba dabba do diddtily bloogalsnort.
**Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!Ding! Ding! Ding! Ding! Ding! Ding!**
**Net Force = 0**
**Sum of Forces = 0**
**Its in Equilibrium**
**Newton's First Law**
**Acceleration = 0**
403
Satellite
Any object that orbits the Earth
(Spaceships, the moon, asteroids, etc)
404
Non-Zero
Not equal to zero
405
"Applied"
Put upon.
"A 13-N force was applied to a rock," means that you pushed or pulled on the rock with a force of 13-N.
406
Frictionless
No friction AT ALL.
Even more slippery than the slipperiest ice!
407
"Releases"
Drops
This would mean that you didn't "throw" the object down, so it starts with an intitial velocity of zero.
408
"Released"
Dropped
(Again, initial velocity is zero)
409
"Drops"
Not thrown up or down.
(If a boy "drops" a rock off a cliff, the initial velocity would be zero)
410
"Throws"
Gives an initial velocity to.
(Can be up, down, or any other direction)
411
Suspended
Hanging From
412
"Acted Upon"
"To exert or have an effect upon."
A force of 20 Newtons **"****_acted upon"_** the the block to the right.
413
Variable
Changing
A **_"variable"_** horizontal force acted upon the object.
414
What does the word, **_"experience"_** mean in the following context?
The object **_"experienced"_** a lot of friction.
It means **"encountered"** or **"was subjected to."**
The object **"encountered"** a lot of friction
The object **"was subjected to"** a lot of friction.
415
Towed
Pulled
416
What does **_"neglecting"_** mean in the following sentence?
**_"Neglecting"_** air friction, the Earth's gravitational field causes object to accelerate at 9.8 m/s2.
It means "Ignoring"
"**_neglecting air friction_**," means the same thing as "ignoring air friction."
417
What is this?
Its a bottle rocket!
418
What does the word **"falls"** mean in the following sentence?
A rock "**_falls"_** from the edge of a cliff.
**V0 = 0 m/s**
"**Falls"** means that the rock was not thrown down or up. Thus, it has an intial velocity of zero.
419
What does the word **_"approximately"_** mean in the following sentence?
The weight is **_"approximately"_** 5-newtons
It means "close to" or "about."
For example, if the weight is truly 4.9-newtons,
we could say it is **_"approximately"_** 5.0-newtons
or **_"about"_** 5.0-newtons.
420
What SI measurment unit would you use to measure weight?
**Newtons**
Weight is a force.
421
Defined as "the ability to cause a change."
Energy
422
Stored Energy is often called
Potential Energy
423
In science, work is often defined as
The change in energy caused by a force.
Work = Force x Distance
424
What are two things you could change about a car that would increase its ability to accelerate?
Make it lighter
Make the engine more powerful.
Less mass means more acceleration and more force means more acceleration.
425
What is the ONLY reason some obects fall more quickly than others when released?
Air Friction!
If there were no air, ALL objects would fall at the same rate.
426
"Uniform Linear Motion"
is just a physicsy way of saying....
"Moving in a straight line at a steady speed."
427
428
429
430
431
A box is sitting on the floor. The force you must apply to start the box in motion must be a tiny bit bigger than the force of _______ \_\_\_\_\_\_ on the box.
Static Friction
432
You are pushing a box across a floor.
The force you must apply to keep the box moving at a constant speed will be equal to the force of __________ \_\_\_\_\_\_\_\_\_\_\_ on the box.
Sliding Friction
(aka Kinetic Friction)
433
**µ**m
**micro**meter
"µ" is the symbol for the metric prefix "micro"
434
µg
microgram
"µ" is the symbol for the metric prefix "micro"
