Unit 1: Intro to Science

Question 0

science

Answer 0

knowledge of the physical world and it’s phenomena

Question 1

How does depth affect water temperature?

What is the test/experimental group?

Answer 1

water temperatures taken at different depths

Question 2

scientific inquiry

Answer 2

the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather- consists of 6 steps

Question 3

steps of scientific inquiry

Answer 3

1. pose a question
2. develop a hypothesis
3. design an experiment
4. collect and interpret data
5. draw conclusion
6. communicate results

Question 4

scientific theory

Answer 4

A well-tested hypothesis- an explanation based on supportive data from repeated experiments; may be modified or discarded if proven incorrect by future testing

Question 5

scientific law

Answer 5

describes an observed pattern in nature; remains unchanged under the same conditions; considered a rule of nature

Question 6

controlled experiment

Answer 6

an experiment in which only one variable is changed at a time

Question 7

parts of a controlled experiment

Answer 7

variable, independent variable, dependent variable, constant, control group, and experimental group

Question 8

variable

Answer 8

any factor that changes in an experiment

Question 9

dependent variable

Answer 9

the factor that changes in response to a change in the independent variable

Question 10

independent variable

Answer 10

the one factor that a scientist changes in an experiment

Question 11

constant

Answer 11

any factor in an experiment that does not change

Question 12

control group

Answer 12

standard for comparison

Question 13

experimental group

Answer 13

group of subjects that are exposed to the independent variable

Question 14

the effect of fertilizer on the growth rate of plants

list the independent variable, dependent variable, control group, experimental groups, and at least three constants

Answer 14

independent variable: amount of fertilizer
dependent variable: growth rate of the plants
control group: 0 tbsp/week
experimental groups: 1 tbsp/week, 2 tbsp/week, 3 tbsp/week
constants: species of plants, same size, and same soil

Question 15

Metric System

Answer 15

referred to as the SI (international system) of units
developed by the French in 1791
based on multiples of 10
used by scientists world-wide

Question 16

what must every measurement include?

Answer 16

an amount (quantity) and a unit (meter, liter, gram, etc.)

Question 17

length(l)

Answer 17

how long an object is; measured in meters(m)

Question 18

(surface) area(A)

Answer 18

the amount of space on the surface of an object
length x width
measured in square meters

Question 19

volume(v)

Answer 19

the amount of space and object occupies
l x w x h
measured in cubic meters for solids
liquid volumes are measured in units of liters

Question 20

1 mL=

Answer 20

1 cm cubed

Question 21

mass(m)

Answer 21

the amount of matter in an object
measured in units of grams(g)
measured on a triple beam balance

Question 22

weight(wt)

Answer 22

a measure of the force of gravity acting on an object
mass x gravity
measured on a scale
measured in Newtons

Question 23

density(d)

Answer 23

the amount of mass contained in a given volume
m/v
measured in grams per cubic centimeter

Question 24

kilo

Answer 24

k

1,000

Question 25

hecto

Answer 25

h

100

Question 26

deka

Answer 26

da

10

Question 27

deci

Answer 27

d

.1

Question 28

centi

Answer 28

cm

.01

Question 29

milli

Answer 29

m

.001