Scientific Investigation

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

• dependent variable

• independent variable

• data

• constant variable

What are the three kinds of variables that you need to identify in your experiments?

• independent, constant, dependent

• independent, dependent, identical

• identical, constant, sample

What is the controlled variable?

• the variable that you purposely manipulate
• the variable that is being observed
• the variable that is not changed
• the variable that does not exist

The factors in an experiment that can be changed. 

• variables
• quantitative data
• hypothesis
• qualitative data

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

• conclusion
• procedures
• materials
• responding variable

What is independent variable?

• the variable that you purposely manipulate
• the variable that is being observed
• the variable that is not changed.

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

Which of the following is an example of qualitative data?

• the color of the fur of an animal
• the mating behavior of an animal
• the average number of offspring that an organism has
• the description of an odor that a chemical produces

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

• data
• theory
• hypothesis
• fact

What is the variable that we are measuring in an experiment?

• Independent
• Dependent
• Control
• Experimental