Parts of an Experiment

Multiple Choice

How many variables can be tested in a controlled (fair) experiment?

• one

• two

• three

• as many as possible

Multiple Select

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 constants? (Select 2 answers)

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

Multiple Choice

An experiment is conducted to test how different cleats change an athletes running speed.  Six different types of cleats are tested and the 100m run time is recorded.  What is the independent variable?

• The type of cleat
• The run time
• The 100 meters
• The athlete

Multiple Choice

Johnny wants to know how different types of colored light affect plant growth? What is the IV?

• types of plant growth

• types of colored lights

• plant growth on colored lights

• plant growth

Multiple Choice

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

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

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

Multiple Choice

The variable that is measured.

• Controlled Variable

• Dependent Variable

• Independent Variable

Multiple Choice

Things that stay the same throughout the whole experiment are called

• controls
• dependent variables
• independent variables
• constants

Multiple Choice

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

• dependent variable
• independent variable
• data
• control group

Multiple Choice

A test is set up to test which brand of soda creates the biggest foam explosion when adding a Mentos candy.  Three different sodas were tested. They measured the height of the foam eruption.   What is the dependent variable?

• Brand of soda
• Number of mentos candies used
• Height of foam eruption
• Temperature of soda

Multiple Choice

An experiment is conducted to test which kind of cat food a cat likes best.  The amount of food the cat eats is recorded and four different type of food are tested. What is the dependent variable?

• The cat food
• The cat
• The amount of food the cat eats.
• The bowl the cat ate out of.