9.17 Monday Test 1 Review (IV/DV; Metric; Sci note; speed)

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

• one

• two

• more than two

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

• dependent variable

• independent variable

• control variable

You set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• distance traveled by the ball

• height of the ramp

• mass of the ball

This type of variable remains the same for the control and experimental group.

• constant

• dependent

• independent

Sarah is participating in a walkathon to raise money for local literacy programs. The amount of money Sarah will raise depends on the distance she walks.

What is the dependent variable?

• Amount of money raised.

• Distance walked

• Walkathon distance

You plan an experiment to find out how the height you drop a ball affects how high the ball bounces. What is the independent variable?

• Height the ball is dropped.

• Height the ball bounces

• Your height.

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Your height

• Height the ball is dropped

• Height that the ball bounces

When experimenting with the growth of a plant, a scientist uses three Starburst tomato plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

When experimenting with the growth of a plant, a scientist uses three Starburst tomato plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

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 is the dependent variable?

• Type of plant

• Water, apple juice, milk

• Plant growth