Physical Science Unit 1 Review

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

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 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

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, what are the controlled variables?

• Type of plant, amount of music, and sunlight
• Water, apple juice, milk
• Plant growth

Metric unit used to measure the amount of time.

• Liter
• Degree Celsius
• Second
• Gram

Metric unit used to measure the temperature of an object.

• Meter

• Liter

• Kelvin

• Gram

Metric unit to measure the length of an object or distance.

• Meter
• Liter
• Degree Celsius
• Second

Metric unit used to measure the amount of matter in an object.

• Meter
• Liter
• degree Celsius
• Gram

Metric unit used to measure the space an object takes up.

• Meter
• Liter
• degree Celsius
• Second

The prefix "centi" means which of the following?

• 10

• 1000

• 100

• 1 Penny because it says cent