Types of Variables

Variables

Multiple Choice

This variable is the one thing that is changed on purpose...

• independent variable

• dependent variable

• controlled variable

Multiple Choice

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

• Type of fertilizer

• Size of sunflower

• Type of sunflower

Multiple Choice

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

• Type of fertilizer
• Size of sunflower
• type of sun flower

Multiple Choice

How many independent variables are allowed to be changed in an experiment?

• 1

• 2

• as many as you want

• 0

Multiple Choice

A student wants to test the hypothesis of "If salt is added to water then the boiling point of water will decrease (go down)." What is the independent variable?

• Whether salt is added or not

• Boiling Point

• Amount of water

Multiple Choice

Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. What is the independent variable?

• the different surfaces

• using the same ball

• how high they bounce

Multiple Choice

These are the variables that should stay the same. They do not get any changes in order to make for a fair test.

• Dependent Variables

• Controlled variables

• Independent Variables

Multiple Choice

The variable that is being tested, counted, or measured and how it reacts to the independent variable is known as:

• Independent Variable

• Controlled Variable

• Dependent Variable

Multiple Choice

What is the DEPENDENT variable (effect that is measured) in this experiment?

"Do tall people jump further than short people?"

• height of the person

• weight of the person

• how fast the person runs

• how far the person jumps

Multiple Select

Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.

• She used different types of seeds/plants.

• The plants are in different kinds of pots.

• She did not plant very many plants.

• Seed age might not make a difference.

Multiple Select

A scientist is testing which flavor of ice cream melts the fastest. What would his controlled variables be? (choose ALL that apply)

• The flavor of ice cream

• the kind of cone the ice creams are in

• the place in the room where the ice cream is

• the size of the scoop

• the time it takes to melt

Multiple Choice

You are testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in this experiment.

• They type of pot you put the plants in.

• The amount you water each plant.

• The amount of sunlight the plants get.

• The amount the plant grows.

Multiple Choice

What is the DEPENDENT variable (effect) in this experiment?

"Does eating breakfast improve test scores?"

• eating breakfast or not

• the grade you got on the test

• what time you get up in the morning

• how tasty the breakfast is