Free Printable G7_Scientific Method Practice (Variables)

1.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

a)

Dependent

b)

Independent

c)

Control

d)

Compound

2.

What would the INDEPENDENT variable be in an experiment testing which types 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.

Research Question: Does the type of gasoline put in a car effect 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

4.

This variable in an experiment is the one being deliberately changed by the scientist.

a)

dependent variable

b)

independent variable

c)

data

d)

control group

5.

In a controlled experiment, how many variables can be worked with at a time?

a)

one

b)

none

c)

two or more

d)

how ever many makes sense.

6.

The part of the experiment that remains the same for the control and experimental group.

a)

constants

b)

control

c)

independent

d)

dependent

7.

An experiment is being done to determine how light affects the growth of small zinnia plants. One plant is placed in full sunlight, the second in a shaded area, the third in an unlit closet. What is the independent variable in the experiment?

a)

the amount of light

b)

the type of plants

c)

the type of soil

d)

the length of the experiment

8.

An experiment is being done to determine how light affects the growth of small zinnia plants. One plant is placed in full sunlight, the second in a shaded area, the third in an unlit closet. The hypothesis of this experiment could be:

a)

Plants grow differently under different conditions.

b)

Zinnia plants in direct sunlight grow taller than zinnia plants in little or no sunlight.

c)

Many things, including sunlight, affect the growth of a plant.

9.

True or False - Experiments should have many independent variables.

a)

TRUE

b)

FALSE

10.

An experiment is being done to determine how light affects the growth of small zinnia plants. One plant is placed in full sunlight, the second in a shaded area, the third in an unlit closet. What is the independent variable in the zinnia experiment?

a)

The plant growth

b)

The amount of sunlight

c)

The length of time needed to conduct the experiment

d)

The amount of water given daily

11.

What observations might you make about a nearby cat?

a)

The cat is black and white.

b)

The cat is hungry.

c)

The cat is lost.

12.

Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

a)

distance traveled by the ball

b)

height of the ramp

c)

mass of the ball

d)

weight of the ball

13.

This type of variable is what you DON'T change in a lab

a)

Control

b)

Independent

c)

Dependent

14.

A variable that is unchanged throughout the experiment is the:

a)

Controlled Variable

b)

Experimental Variable

c)

Independent Variable

d)

Dependent Variable

15.

Jack is doing an experiment to see which shoes help him run the fastest. What will his independent variable be?

a)

The shoes he wears

b)

The track he runs on

c)

The time of day he runs

16.

Sally is doing an experiment to see which brand of sunscreen works best. What is not a controlled variable for this experiment?

a)

The time of day she is in the sun

b)

The amount of time she is in the sun

c)

The amount of sunscreen she uses.

d)

The brand of sunscreen.

17.

Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the independent variable

a)

Type of fertilizer

b)

Size of sunflower

c)

type of sun flower

18.

Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the dependent variable

a)

Type of fertilizer

b)

Size of sunflower

c)

Type of sunflower

19.

Molly investigated if the age of students caused them to be better drivers. What is the independent variable?

a)

Type of car

b)

Skill of driving

c)

Age of student

20.

Howard believed that fertilizer will make the plant grow faster, so he treated one plant with fertilizer and the other plant did not receive fertilizer. What is the experimental group?

a)

plant receiving fertilizer

b)

plant not receiving fertilizer

c)

plant receiving water because it needs water to grow

21.

Angel believed that fertilizer will make the plant grow faster, so he treated one plant with fertilizer and the other plant did not receive fertilizer. What is the control group?

a)

plant receiving fertilizer

b)

plant not receiving fertilizer

c)

Angel believing the plant will grow faster

22.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the control group?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

23.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the experimental group?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

24.

A study was created to test the effects of fear in children. The hypothesis of the experimenters was that if babies were exposed to fuzzy bunnies and at the same time a loud cymbal was struck close behind them, then that child would be afraid of all fuzzy things. Another group of children would be exposed to bunnies without any loud noises. The study was carried out as planned and as a result, hundreds of young children developed fear of all cute furry bunny rabbits. What is the control group in this experiment?

a)

Babies that heard a loud cymbal every time they saw a bunny

b)

Fear

c)

Cymbal Sound

d)

Age

e)

Babies that did not hear a loud cymbal every time they saw a bunny

25.

Mr. Batchelder wants to know if the the number of games he watches the Cardinals play each season has an effect on the number of games they win. Mr. Batchelder decides to run this experiment over three football seasons. The first season he watches none of the games the Cardinals play. The second season he watches 50% of the games they play. The third season he watches 100% of the games they play. He watches all the games from the same spot on his couch and wears his lucky tie. What is the experimental group?

a)

The number of games Mr. Batchelder watches

b)

His lucky tie

c)

The number of games the Cardinals win

d)

The season where Mr. Batchelder watches 0 games.

e)

The seasons where Mr. Batchelder watches 50% and 100% of the games.

G7_Scientific Method Practice (Variables)

Total questions: 25

Worksheet time: 1hrs 21mins

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