Experimental Design - Environmental Science Review 2019

What is the factor that an experimenter changes on purpose?

• Dependent Variable
• Independent Variable
• Constant
• Control

A summary of the experiment that includes whether hypothesis was right or wrong

• Hypothesis
• Results
• Conclusion
• Independent Variable

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

If I water the plant more often, then it will grow taller.  Name the independent variable.

• The height of the plant
• The size of the pot
• The amount of water
• The amount of light.

If I water the plant more often, then it will grow taller.  Name the dependent variable.

• The amount of water.
• The amount of soil.
• The height of the plant.
• The amount of water.

The variable that depends on changes to the independent variable. 

• control group
• dependent variable
• experimental variable
• independent variable

A factor in an experiment that stays the same.

• control group
• constant
• dependent variable
• experimental group

Three baseball players investigate to see who can throw a baseball the farthest. They mark off an area on the playground for their investigation. Which should they keep constant?

• height of the players
• color of the balls thrown
• order in which the players throw
• spot from which the players throw

What is the control group?

• amount of time the spray stays on the shower
• the half of the shower sprayed with water
• the half of the shower sprayed with coconut juice
• the amount of slime

What is the experimental group?

• drink type
• # of paper stacks
• Group B
• Group A