Ck-12 Experiment MS

You did an experiment to find out how the mass of a toy car affected its speed down a ramp. An example or examples of controlled variables in the experiment could include the:

• smoothness of the ramp.

• steepness of the ramp.

• sizes of the car tires.

• all of the above

A controlled scientific study examining variables is known as scientific ___________.

In an experiment the manipulated variable is also called a(n) _______________ vaiable

A variable that is changed by the researcher is called a(n)

• responding variable

• manipulated variable

• dependent variable

• two of the above

An _____________ is a controlled scientific study of specific variables.

The responding variable in an experiment is the variable that is changed by the researcher.

• True

• False

In an experiment, a variable is a factor that doesn't change.

• True

• False

When other variables are controlled, you know that the manipulated (independent) variable is the only variable affecting the responding (dependent) variable.

• True

• False

There must be at least two variables in a scientific experiment.

• True

• False

Experiments can be carried out only in a science lab.

• True

• False