Scientific Method and Variables Review

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

The part of the experiment that remains the same for the control and experimental group.

• constants
• control
• independent
• dependent

Mr. S. sets 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
• weight of the ball

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 _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

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

• Dependent
• Independent
• Control
• Compound

Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Suppose you are looking at how daisies grow in different light sources. What would your control group be?

• Blue filtered light
• Red filtered light
• Green filtered light
• Sunglight

The dependent variable is the one

• you measure.
• you change.

The independent variable is the

• one you measure.
• one you change.

The control group is the...

• group you are testing
• "normal" group