Scientific Process Review 1

Peter wanted to test whether Nike or Reebok shoes cause students to run faster in. Identify the IV in the following scenario.

• Students

• Run faster

• Nike or Reebok shoes

• Peter wanted to test.

Yasmina tested whether girls or boys can dance longer to music.

Identify the DV in this scenario.

• Dance longer

• Girls or boys

• longer to music

• Yasmina tested whether

Which would be a suitable hypothesis for this question:

Is there a relationship between girls with long hair and short hair, and how fast they can run?

• If a girl has short hair, then she can run faster.

• If a girl has blonde hair, then can run faster.

• If a girl has short hair, then she will have long hair.

• If a girl has blonde hair, then he hair will be long.

Which question best matches the hypothesis?

If the car is black, then it will be hotter in summer.

• Is there a relationship between the color of the car, and how hot it is in summer?

• Is there a relationship between the size of the car, and how big it is?

• Is there a relationship between the color of the car, and how cool it looks?

• Is there a relationship between the size of the car, and how hot it is in summer?

An independent variable (IV) is ...

• what you look at in the experiment.

• what you ask your partner about in an experiment.

• what you compare in an experiment.

• what you measure in the experiment.

In an experiment we can have ...

• more than one CV.

• Two IVs.

• only one DV.

• three AVs.

The purpose of the control variable is...

• to make sure al the alternative variables are in the correct place.

• to make sure that you get more than one independent variable.

• to make sure that some items are not tested in the experiment.

• to make sure that the control, independent and dependent variables are the same.