Free Printable Experimental Variables

1.

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

2.

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, what are the constants?

a)

Type of plant, amount of music, and sunlight

b)

Water, apple juice, milk

c)

Plant growth

3.

The variable that is being tested or changed

a)

independent variable

b)

dependent variable

c)

control variable

4.

The variable that is being measured

a)

independent variable

b)

dependent variable

c)

control variable

5.

the variable that is kept the same to make sure results are caused by the thing being tested

a)

independent variable

b)

dependent variable

c)

constant

d)

control group

6.

the variable that is observed at the end of the experiment

a)

independent variable

b)

dependent variable

c)

control variable

7.

What is the independent variable?

a)

what we are changing or testing

b)

what we are observing or measuring

c)

what we keep the same to make the experiment fair

8.

What is the dependent variable?

a)

what we are changing or testing

b)

what we are observing or measuring

c)

what we are keeping the same to make the experiment fair

9.

Mr. S set 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

10.

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

a)

Distance traveled by the ball

b)

Height of the ramp

c)

Mass of the ball

11.

What is the DEPENDENT variable (effect) is this experiment?
"Does eating breakfast improve test score?"

a)

eating breakfast or not

b)

the grade you got on the test

c)

what time you get up in the morning

d)

how tasty the breakfast is

12.

What is the INDEPENDENT variable (cause) is this experiment?
"Which type of medium is best for plant growth?"

a)

height of plant (cm)

b)

type of medium (soil vs. sand)

c)

amount of medium

d)

types of plant

13.

What is the DEPENDENT variable (effect) in this experiment?
"Do tall people jump further than short people?"

a)

height of the person

b)

weight of the person

c)

how fast the person runs

d)

how far the person jumps

14.

What is the INDEPENDENT variable (cause)in this experiment?
"Which type of metal, copper or aluminum, conducts heat faster?"

a)

size of metal

b)

types of metal

c)

time it takes to heat up

d)

shape of the metal

15.

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

16.

Should experiments be repeated over and over to see if the results are the same each time?

a)

yes

b)

no

17.

a factor that is not changed in an experiment; all the parts that stay the same to keep the experiment fair and consistent

a)

variable

b)

control group

c)

constant

d)

evidence

18.

A control is:

a)

Something kept the same in an experiment.

b)

Something changed in an experiment.

c)

A standard of comparison in an experiment (the normal).

d)

Not a part of experimental design.

19.

Ms. Frizzle wanted to know what color flower attracted the most butterflies. She already had white flowers planted, but she added red and purple flowers to her garden. Every day she watched the flowers from 10 -11 in the morning and counted how many butterflies landed on each colored flower. Each flower was planted in the band courtyard and was watered at 3:30 every day.

Red and Purple flowers is the ______________

a)

independent variable

b)

constant

c)

dependent variable

d)

control

20.

Ms. Frizzle wanted to know what color flower attracted the most butterflies. She already had white flowers planted, but she added red and purple flowers to her garden. Every day she watched the flowers from 10 -11 in the morning and counted how many butterflies landed on each colored flower. Each flower was planted in the band courtyard and was watered at 3:30 every day.

Number of butterflies is the ______________

a)

independent variable

b)

constant

c)

dependent variable

d)

control

21.

How many independent variables should be tested at a time in a scientific investigation?

a)

none

b)

one

c)

two

d)

three

22.

Tom is creating an experiment to see what food his pet lizard likes the best. He creates an experiment in which he offers his lizard a choice of crickets or mealworms. He records how much of each choice is eaten each day. At the end of two weeks, Tom finds the lizard has eaten a few more mealworms than crickets. What is the independent variable?

a)

type of food

b)

type of lizard

c)

how much the lizard ate

d)

which food the lizard liked best

23.

If I water the plant more often, then it will grow taller. Name the independent variable.

a)

The height of the plant

b)

The size of the pot

c)

The amount of water

d)

The amount of light.

24.

If I water the plant more often, then it will grow taller. Name the dependent variable.

a)

The amount of water.

b)

The amount of soil.

c)

The height of the plant.

d)

The amount of water.

25.

A study was done to find if different types of tires affect the breaking distance of a car. What is the independent variable?

a)

Type of tire

b)

Breaking Distance

c)

the type of car

26.

A study was done to find if different type of tiress affect the breaking distance of a car. What is the dependent variable?

a)

The type of tire

b)

The breaking distance

c)

the type of car

27.

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

28.

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

29.

Ms Coleman uses a new spray cleaner to remove the dried pancake left by the Griddle club students on the lab tables. Identify the dependent variable.

a)

type of cleaner

b)

the new cleaner

c)

the old cleaner

d)

the effect of the cleaners

30.

A study was conducted to determine if how long you sleep affects your test scores. A normal nights sleep for an adolescent is 8 hours. In the study one group of students was woken after 5 hours of sleep. What was the independent variable?

a)

sleep affects test scores

b)

time asleep

c)

test scores

d)

students who slept 8 hours

31.

An experiment was conducted to determine if the caffeine in Red Bull affects an adolescents appetite. Students were divided into two groups. Which group should be the control group?

a)

students drinking Red Bull an hour before eating

b)

students drinking water an hour before eating

c)

cannot be determined

32.

Two plants are grown using the same light and pots. One plant is given water that has been microwaved. The other plant is given water that has NOT been microwaved. After two weeks the height is measured of each plant. What is the dependent variable?

a)

water that has been microwaved

b)

water that has NOT been microwaved

c)

height of the plant

d)

type of soil

33.

A company wants to sell more sports drinks so they decide to add more sugar. For Group A they give them gatorade with an added teaspoon of sugar. For Group B they give them plain gatorade without adding sugar. Which Group is the CONTROL GROUP?

a)

Group A

b)

Group B

c)

The Gatorade

d)

The Company

34.

In the experiment shown, plant A received 50 mL of coke each day, plant B received 50 mL of juice, and plant C received 50 mL of water. Every day for one week, plant growth was measured. Which group served as the control group?

a)

Plant A

b)

Plant B

c)

Plant C

d)

There was no control group

35.

Does the temperature of water affect the time it takes a sugar cube to dissolve?

a)

IV: Type of water
DV: Dissolving rate

b)

IV: Temperature of water
DV: type of sugar cube

c)

IV: Temperature of Water
DV: Dissolving Rate

d)

IV: Time
DV: Number of sugar

Experimental Variables

Total questions: 35

Worksheet time: 35mins

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