Scientific Skills Review

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

The dependent variable in an experiment is the factor that is...

• used for comparison

• remaining the same

• being changed on purpose

• being observed/measured

If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?

• Type of bike they ride

• How fast you get to school

• Riding a bike or walking

• None of the above

This part of the experiment serves as a basis of comparison.

• experimental group

• control group

• data

• variables

The factor in an experiment that is deliberately changed is called the...

• dependent variable

• independent variable

• data

• control group

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.

What factor would he have to keep constant?

• The Song

• The Reed

• The Applause

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the independent variable?

• The Song
• The Reed
• The Applause

Squidward found new reeds to tryout for his clarinet.  He used an APPLAUSOMETER to measure applause after playing  Under the Sea with each reed.  The results were put in the table.
What was the dependent variable?

• The Song
• The Reed
• The Applause

Any factor that remains the same in an experiment is referred to as...

• the independent variable

• the dependent variable

• the constant

• the hypothesis