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12 questions
This variable is the one thing that changed on purpose...
Dependent Variable
Control
Independent Variable
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
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.
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
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.
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
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
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
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
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
How many independent variables are allowed to be changed in an experiment?
1
2
as many as you want
0
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
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