7th Grade Review of Unit 1

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

• True
• How fast you get to school
• Riding a bike or walking
• False

Dependent variable means

• the scientist controls what to test
• educated guess
• ask a question
• what is being measured

What is a factor that the experimenter has full control over and changes to see what happens?

• Dependent Variable
• Independent Variable
• Control group 
• Hypothesis

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

A SUMMARY OF YOUR RESULTS

• CONCLUSION

• HYPOTHESIS

• QUESTION

• DATA

Your hypothesis MUST be _________________________.

• silly

• testable

• a variable

• educational

A good or “valid” experiment will only have ________ Independent variable!

• 1

• 2

• 3

• It doesn't matter!

The purpose of a control group is ____________________________________________.

• to live

• to make the experiment work

• controls are used as a basis for COMPARISON

• so that we know the results of the experiment are due to what we are testing

In a controlled experiment, how many variables can be worked with at a time?

• one

• none

• two or more

• how ever many makes sense.

What is the last step in the scientific method?

• conclusion & communicate results

• ask a question

• form a hypothesis