Experimental Variables Lesson

Lesson: Hypotheses, Variables, Experiments

By William Lovering

Multiple Choice

One of the most important characteristics of a hypothesis is that it is:

• correct

• testable

• complex

• non-specific

Multiple Choice

Would a large sample or a small sample give you the best data when designing an experiment?

• Large Sample

• Small Sample

Multiple Choice

What is a variable in an experiment?

• Something that can change

• Something that is always the same

• The results of the experiment

• None of these

Multiple Choice

The part of the experiment that you manipulate to test your hypothesis is called

• independent variable

• dependent variable

• controlled variables

• constant variables

Multiple Choice

Mythbusters did an experiment to see if driving with windows down or with the AC on gets better gas mileage. They drove the same car twice down a track, going the exact same distance both times- once with the windows down, once with the AC on. Then they measured the amount of gas used by the car each trip.

What is the dependent variable in this experiment?

• the amount of gas used

• Using the AC or having 2 windows down.

• using the exact same car and the exact same driving distance

Multiple Choice

Mythbusters did an experiment to see if driving with windows down or with the AC on gets better gas mileage. They drove the same car twice down a track, going the exact same distance both times- once with the windows down, once with the AC on. Then they measured the amount of gas used by the car each trip.

What are controlled variables in this experiment?

• the amount of gas used

• Using the AC or having 2 windows down.

• using the exact same car and the exact same driving distance