Free Printable Replicating Scientific Experiments

1.

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

a)

Scientists often ask each other for help in performing experiments.

b)

Replication of experiments helps to confirm and verify results.

c)

Scientists frequently perform other scientists’ experiments in order to practice their technique.

d)

Repeating experiments is an effective way to make sure a laboratory is clean.

2.

Dr. Smith has been reading about another scientist’s research in a physics journal. He plans to do these experiments himself and see if he gets the same result.

a)

repetition

b)

replication

3.

Josue goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.

a)

repetition

b)

replication

4.

Kevin was mixing a batch of glue and borax solution to make silly putty and discovered a new substance that glows in the dark. He gave Ja'nay his specific amounts of ingredients and the steps of his procedure. He asked Ja'nay to try the experiment to see if she gets the same results.

a)

repetition

b)

replication

5.

Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.

a)

repetition

b)

replication

6.

When a another scientist does someone's experiment to see if the results are valid?

a)

repetition

b)

replication

c)

experimental method

d)

controlled variable

7.

Dilcia wants to know how drinking milk or drinking water affects how tall Monica and her twin sister will grow. Which is the independent variable?

a)

Monica's growth

b)

drinking milk or water

8.

The one factor that a scientist changes during an experiment.

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

9.

The variable that is measured.

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

10.

The factors that stay the same or are constant throughout the experiment.

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

11.

In a well designed experiment, how many independent variables should be tested at a time?

a)

one

b)

none

c)

two or more

d)

how ever many makes sense.

12.

Why is it important to have only one independent variable and to control the other variables when performing science experiments?

a)

So you can tell which factor is causing the change in the experiment.

b)

It does not matter, you can have as many independent variables as you want.

13.

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

a)

independent

b)

dependent

c)

constant

14.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

15.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

16.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What are two controlled variables? (Select 2 answers)

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

Replicating Scientific Experiments

Total questions: 16

Worksheet time: 31mins

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