Answering Scientific Questions

A possible explanation to a problem that has not yet been tested. 

• data
• theory
• hypothesis
• fact

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

• dependent variable
• independent variable
• data
• control group

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

• quantitative

• qualitative

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• responding variable

There are two types of observations. Which type of observation involves descriptions/photographs/illustrations that cannot be counted or measured?

• qualitative

• quantitative

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

• one
• none
• two or more
• how ever many makes sense.

Which statement is an inference about this picture?

• The van is tan.
• The  van ran into KFC. 
• The driver was hungry. 
• Red and white are part of the KFC building. 

Dr. Vazquez 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

Dr. Vazquez sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.

• height of the ramp

• distance traveled by the ball

• 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