Experimental Design

Front

What is the variable in an experiment that is deliberately changed by the scientist?

Back

Independent variable

Front

In an experiment, what is the variable that is measured or observed?

Back

Dependent variable

Front

What is the purpose of a controlled experiment?

Back

To isolate the effect of the independent variable on the dependent variable.

Front

How many variables should be tested in a controlled experiment?

Back

One

Front

What is the dependent variable in an experiment investigating the effect of age on driving skills?

Back

Skill of driving

Front

Why is it important to test one variable at a time in an experiment?

Back

To know what is causing the changes.

Front

What is the term for the factor that remains constant in an experiment?

Back

Control variable

Front

What is the difference between independent and dependent variables?

Back

The independent variable is manipulated, while the dependent variable is measured.

Front

In an experiment, if you drop objects of different sizes from a height, what is the dependent variable?

Back

The time it takes for each object to hit the ground.

Front

What is a hypothesis in the context of experimental design?

Back

A testable prediction about the relationship between variables.