Unit 1 Flashcards Preview

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Flashcards in Unit 1 Deck (40):
1

What does a meter stick measure

Length in meters

2

What does a balance measure

Mass in grams

3

What does a thermometer measure

Temperature in degrees Celsius

4

What is the SI units

Kelvins

5

What does a spring scale measure

Force or weight in newtons

6

What does a spectrometer measure

Electromagnetic spectrums(makes rainbows)

7

What does a psychrometer measure

Humidity %

8

What do you call the curve and the graduated cylinder with water

The meniscus

9

How do you read the volume from the bottom of the curve

Always read at bottom of curve

10

Define density

Amount of matter in a given object/volume

11

What is in the triangle thing

M
D V

12

Define scientific model

A representation of an object or system

13

Name one example of a scientific model

Plastic fruit that looks real but does not taste real

14

Define physical models and give an example

They look like the things they represent
Ex: Barbie doll

15

Define a mathematical model and give an example

Used to predict something using symbols
Ex: weather map

16

What is the formula for speed

Speed equals distance divided by time

17

What is the formula for density

D equals M divided by V. Remember heart in half

18

Define conceptual models and give an example

A model of an idea or theory
Ex: Big Bang theory of a blueprint of a building

19

How are models used

To represent something very large or very small: and to help illustrate or explain a theory

20

Define scientific law

A summary of many experimental results and observations

21

When does a theory become a law

When it correctly projects the result of many experiments

22

Define Theory

Proven through research

23

What is the order to the scientific method(8)

1. Observation
2. Purpose/question/problem
3. Research
4. Hypothesis
5. Experiment
6. Organize data/analysis
7. Conclusion
8. Share results

24

Define observation

Any use of senses to gather information

25

Define hypothesis

A possible explanation or answer to a question

26

Define a controlled experiment

Compares the results from a controlled with the results from one or more experimental groups

27

Define data

They are pieces of information acquired through experimentation

28

Define organizing data

When you organize data into charts or graphs to help make the relationship between information easier to see

29

Define a conclusion

Oh conclusion must refer back to your hypothesis and they also guide what you do next

30

What is the independent variable

Changed in an experiment

31

What is the dependent variable

Result from the independent variable

32

What does a graduated cylinder measure

Volume(milliliters)

33

Define accuracy

How close a measurement is the true value

34

Define precision

How close the measurements are to each other

35

What are qualitative measurement

Words such as heavy or hot

36

What are quantitative words

Measurements that involve numbers

37

Significant figures in a measurement include

All of the digits that are known plus one more digit that is estimated

38

Descriptive investigation and an example

Describe something
Ex weather

39

Comparative investigation an example

When you compare two or more things or compare one thing as it changes over time
Ex One class to another

40

Experimental investigation and one example

When you add a variable
Ex adding weight to a chair