PLTW - Test 3

Scientists follow an experimental design process that includes logical, thoughtful, and clearly defined procedures, to help organize their investigations.

• True

• False

Which one is an example of a research question?

• Does performing jumping jacks for two minutes increase respiratory rate?

• Performing jumping jacks for two minutes will increase respiratory rate.

• Respiratory rate

• Stopwatch

Which one is an example of a hypothesis?

• Performing jumping jacks for two minutes will increase respiratory rate.

• Does performing jumping jacks for two minutes increase respiratory rate?

• The respiratory rate of the test subjects before they performing jumping jacks.

• Only people in good health, with no respiratory problems, should complete this experiment.

Choose the independent variable.

• Performing jumping jacks for two minutes

• Respiratory rate

Choose the dependent variable.

• Performing jumping jacks for two minutes.

• Respiratory rate

This is changed by the person conducting the experiment.

• Independent variable

• Dependent variable

• Control

This is the measurable effect or response that happens when you change the independent variable.

• Independent variable

• Dependent variable

• Control

When completing experiments, scientists use a remote control for comparison.

• True

• False

You should use numbers to order the steps of your experiment.

• True

• False

Charts and tables are good ways to capture your data and present it in a away that is easy to analyze.

• True

• False