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Experimental Variables

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.

A student is testing the effect of shoe color on running speed.

What is the independent variable in this investigation?

a)

Shoe color

b)

Running speed

c)

Track surface

d)

Weather conditions

2.

A student is testing the effect of shoe sole material on running speed.

What is the dependent variable in this investigation?

a)

Shoe sole material

b)

Running speed

c)

Track surface

d)

Weather conditions

3.

A student is testing the effect of shoelace tightness on running speed.

What are TWO controlled variables (constants) in this investigation?

a)

Shoelace tightness

b)

Running speed

c)

Track surface

d)

Race distance

4.

Hypothesis: If we increase the length of string on a pendulum, then it will a take longer time period to make one complete cycle back and forth.

What is the independent variable in this investigation?

a)

Time period

b)

Number of cycles

c)

Length of string

d)

Amount of mass on end of string

5.

Hypothesis: If we increase the length of string on a pendulum, then it will a take longer time period to make one complete cycle back and forth.

What is the dependent variable in this investigation?

a)

Time period

b)

Number of cycles

c)

Length of string

d)

Amount of mass on end of string

6.

A student is testing the effect of different amounts of mass on the flight length of one specific paper airplane design.

What is the independent variable in this investigation?

a)

Flight length

b)

Airplane design

c)

Amount of mass

d)

Force of throw

7.

A student is testing the effect of different color paper on the flight length of one specific paper airplane design.

What is the dependent variable in this investigation?

a)

Flight length

b)

Airplane design

c)

Paper color

d)

Location of test flight

8.

A student is testing the effect of different throw forces on the flight length of one specific paper airplane design.

What are TWO controlled variables (contants) in this investigation?

a)

Flight length

b)

Airplane design

c)

Throw forces

d)

Location of test flight

9.

Hypothesis: If pine tree seedlings have a biodegradable root container, then they will grow faster than seedlings with bare roots.

What is the independent variable in this investigation?

a)

Amount of fertilizer used

b)

Amount of water

c)

Tree growth

d)

Root treatment

10.

Hypothesis: If pine tree seedlings have a biodegradable root container, then they will grow faster than seedlings with bare roots.

What is the dependent variable in this investigation?

a)

Type of soil

b)

Amount of daylight hours

c)

Tree growth

d)

Root treatment

11.
The type of variable that you change or manipulate in an experiment.  It is what you are testing.
a)
Independent
b)
Dependent
c)
Control
12.
The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.
a)
Independent
b)
Dependent
c)
Control
13.
The parts of the experiment that must be kept the same.
a)
Constants
b)
independent
c)
Dependent
14.
How many variables should you change in an experiment?
a)
none
b)

only 1

c)
2 or more
d)
depends on the type of experiment
15.

Maya designed an experiment to answer the following question: How does the amount of water given to a lima

bean seed affect how tall it grows?

In this experiment, what variable should Maya CHANGE?

a)

the amount of water

b)

the kind of plant

c)

the type of soil

d)

the amount of sunlight it gets