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Scientific Method and Variables Review

Total questions: 20

Worksheet time: 17mins

Name
Class
Date
1.

Research Question: Does the type of gasoline used in a car affect how fast the car can drive? What is the independent variable?

a)

Type of gasoline

b)

which car the gas is put into

c)

how fast the car can drive

d)

how much gas is put into the car

2.

What would the INDEPENDENT variable be in an experiment testing which type of paper airplane goes furthest?

a)

the paper used

b)

the type of paper airplane

c)

the distance of each plane's flight

d)

how hard the plane is thrown

3.

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

a)

The type of plant

b)

The amount of sunlight

c)

The type of music

d)

The type of liquid

4.
The independent variable is the ONE thing you _____.
a)
change
b)
keep the same
c)
experiment with
d)
investigate
5.
 In a controlled experiment, the variable that is changed to test the hypothesis is called the –
a)
Controlled Variable
b)
Responsive Variable
c)
Dependent Variable
d)
Independent Variable
6.
Walker is testing which fertilizer will grow the tallest grass.  The height of the grown grass is the __ variable.
a)
constant (same)
b)
independent (changes)
c)
dependent (measured)
7.

Changes in the _________ variable causes changes in the _________ variable.

a)

independent; dependent

b)

dependent; independent

8.

A student is planning an experiment to find out how if the height from which he drops a ball affects how high the ball will bounce. The dependent variable is the _____.

a)

Diameter of the ball

b)

Force acting on the ball

c)

Height that the ball bounces

d)

Height from which the ball is dropped

9.
Why do scientists use the scientific method?
a)
To make sure they get credit for their discoveries.
b)
To make sure their results are valid and can be performed by other scientists.
c)
So that other scientist don't get mad at them
10.
If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?
a)
Procedure
b)
Hypothesis
c)
Question
d)
Results
11.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
12.

What is a hypothesis?

a)

an educated guess stating what you believe will be the result of your experiement

b)

a random guess

c)

a statement of the outcome of your experiment

d)

step by step directions for your experiment

13.
The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect 
a)
independent variable
b)
dependent variable
c)
control variable
14.

What is a constant variable in an experiment?

a)

The variables that do not change in an experiment. The variables that stay the same.

b)

The variables that the scientist changes in the experiment

c)

The variables that are being measured in an experiment

15.
What is being changed in this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
16.
What is being measured or the result/effect of this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
17.
What is being kept constant?
a)
ramp height
b)
speed of the ball rolling
c)
type of ball
18.
What is being changed in this experiment?
a)
temperature of the stove
b)
how fast the water boils
c)
amount of water
19.
What is being measured or the result/effect of this experiment?
a)
how fast the water boils
b)
amount of water
c)
temperature of stove
20.
What is being kept constant?
a)
how fast the water boils
b)
amount of water
c)
temperature of stove