Free Printable Experimental Variables Review

1.

The one variable you change and test in an experiment to see if it has an effect

a)

Controlled variables (constants)

b)

Dependent variable (responding variable)

c)

Independent variable (manipulated variable)

d)

Control group

2.

The variables that are kept the same for ALL subjects and samples in an experiment

a)

Controlled variables (constants)

b)

Dependent variable (responding variable)

c)

Independent variable (manipulated variable)

d)

Control group

3.

The subjects or samples that do not receive the experimental treatment in a study and are used for comparison

a)

Controlled variables (constants)

b)

Dependent variable (responding variable)

c)

Independent variable (manipulated variable)

d)

Control group

4.

The variable you measure in an experiment to determine how much of an effect was caused

a)

Controlled variables (constants)

b)

Dependent variable (responding variable)

c)

Independent variable (manipulated variable)

d)

Control group

5.

Research study: "The effect of light color on the growth of spinach plants"

What is the dependent variable?

a)

Light color

b)

Growth of spinach plants

c)

Amount of water

d)

Type of soil

6.

Research study: "The effect of sunscreen chemicals on the health of staghorn coral"

What is the independent variable?

a)

Sunscreen chemicals

b)

Health of staghorn coral

c)

Water temperature

d)

Amount of light

7.

Research study: "The effect of different amounts of light on the growth of moss"

What would be a controlled variable in this study?

a)

Amounts of light

b)

Growth of moss

c)

Some grown indoors, some grown outdoors

d)

Amount water or moisture

8.

Which of these is a QuaLitative observation?

a)

The flower is red.

b)

The bowling ball weighs 8 pounds.

c)

The boy is 6 years old.

d)

The flower is 8 inches tall.

9.

Which of these is a QuaLitative observation

a)

The ball is round.

b)

The dog is black.

c)

The grass is green.

d)

All of the above.

10.

Which of these is a QuaNtitative observation?

a)

There are boys and girls in the classroom.

b)

There are 7 basketballs in the gym.

c)

We have a lot of teachers at GMS.

d)

The sky is blue.

11.

Which of these is a QuaNtitative observation?

a)

There are boys and girls in the classroom.

b)

There are 7 basketballs in the gym.

c)

We have a lot of teachers at GMS.

d)

The sky is blue.

12.

Which of these is a QuaNtitative observation?

a)

The lemons are yellow.

b)

There are 5 green limes.

c)

The car is black.

d)

The grass is green.

13.

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

14.

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

15.

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

16.

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

17.

The independent variable is the ONE thing you _____.

a)

change

b)

keep the same

c)

experiment with

d)

investigate

18.

Mr. S normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his dependent variable?

a)

Type of reward

b)

Praise

c)

Type of dog

d)

Amount of time the dog follows commands

19.

Mr. S normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his independent variable?

a)

Type of reward

b)

Praise

c)

Walking

d)

Amount of time the dog follows commands

20.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a

a)

control

b)

dependent variable

c)

experimental variable

d)

constant

21.

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

a)

distance traveled by the ball

b)

height of the ramp

c)

mass of the ball

d)

weight of the ball

22.

This group in an experiment does not change anything in the experimental group is the _______________.

a)

Independent variable

b)

Dependent variable

c)

Control group

d)

constant

23.

Mr. S. wants to find the best way to get more students to attend extra help review. Normally, he does not give extra credit for attending extra help. On one quiz, he decides to give extra credit to students who attend extra help. Identify the dependent variable.

a)

extra points for attending extra help

b)

extra points for attending extra help

c)

number of students attending extra help

d)

student scores

24.

Mr. S. uses a new spray cleaner to remove the green slime left by students on the tables. Identify the control trial

a)

type of cleaner

b)

test with a new cleaner

c)

test with the old cleaner

d)

the green slime

25.

the variable that is changed by the scientist at the beginning of the experiment

a)

independent variable

b)

dependent variable

c)

control variable

26.

the variable that is observed at the end of the experiment

a)

independent variable

b)

dependent variable

c)

control variable

27.

Scientific Question: Will a person fall asleep faster if they listen to music?
What is the independent variable?

a)

music

b)

time to fall asleep

c)

person

28.

Scientific Question: Will a person fall asleep faster if they listen to music?
What is the dependent variable?

a)

music

b)

time to fall asleep

c)

person

29.

Scientific Question: Does the type of sneaker you wear affect how fast you can run?
What is the independent variable?

a)

type of sneaker

b)

how fast you run

c)

person

30.

Scientific Question: Does the type of sneaker you wear affect how fast you can run?
What is the dependent variable?

a)

type of sneaker

b)

how fast you run

c)

person

31.

Nico decided to test goldfish food to see which brand his goldfish preferred. He bought three different brands (Fresh, Sprinkles, and Flakes). Nico decided that all brands needed to be tested by the same goldfish and fed the same amount. Nico measured the amount of fish food that was eaten by his goldfish. The INDEPENDENT variable in Nico's experiment is

a)

amount of fish food eaten

b)

the same goldfish

c)

the brand of fish food

d)

none of these are an INDEPENDENT variable

32.

Nico decided to test goldfish food to see which brand his goldfish preferred. He bought three different brands (Fresh, Sprinkles, and Flakes). Nico decided that all brands needed to be tested by the same goldfish and fed the same amount. Nico measured the amount of fish food that was eaten by his goldfish. The DEPENDENT variable in Nico's experiment is

a)

the amount of fish food eaten

b)

the same goldfish

c)

the brand of fish food

d)

none of these are an DEPENDENT variable

33.

What is a dependent variable?

a)

A variable being tested in an experiment.

b)

A variable that changes depending on another variable.

c)

A variable that is kept the same in an experiment.

34.

What is a controlled variable?

a)

A variable being tested in an experiment.

b)

A variable that changes depending on another variable.

c)

A variable that is kept the same in an experiment.

35.

What is an independent variable?

a)

A variable being tested in an experiment.

b)

A variable that changes depending on another variable.

c)

A variable that is kept the same in an experiment.

36.

An experiment was done to find out if different types of flowers attracted more or less butterflies. What is the independent variable?

a)

butterflies

b)

types of flowers

37.

An experiment was done to see which soda was liked by the most people. People were offered different samples and then voted for their favorite. What is the controlled variable?

a)

amount of soda

b)

people

38.

An experiment was done to find out how long a battery would last in a flashlight. They tried 3 different batteries and set up the flashlights in a dark room with a timer. What is the dependent variable?

a)

amount of time until the flashlight bulb burns out

b)

the type of batteries

39.

Do you understand the different types of variables?

a)

Yes

b)

No

40.

Do you understand the difference between qualitative/descriptive data and quantitative/numerical data?

a)

yes

b)

no

c)

not sure

Experimental Variables Review

Total questions: 40

Worksheet time: 36mins

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