Measures wavelengths of light

• microscope

• spectroscope

• chromatograph

Tool best for collecting liquid

• test tube

• stop watch

• petri dish

What type of model is pictured

• mathematical

• conceptual

• physical

A test is done to see how vitamin A affects how often a person gets sick. What is the dependent variable?

• The Vitamin A

• How often a person gets sick

Which letter represents a solid

• A

• B

• C

Student looks at the growth of a plant using different amounts of sunlight. If she put the information in a data table, what would be the independent variable?

• The plant growth

• the amount of sunlight