Independent and Dependent Variables

What is the definition of a variable in science?

• Something that stays constant throughout an experiment.

• Something that can vary or change in an experiment.

• The final outcome or result of an experiment.

• A tool or piece of equipment used in an experiment.

Which type of variable is manipulated by the experimenter?

• Dependent variable

• Controlled variable

• Independent variable

• Constant variable

What does a dependent variable represent in an experiment?

• The factor that is intentionally changed by the scientist.

• The factor that is kept the same across all experimental groups.

• The results or what is being measured in response to changes.

• A variable that has no impact on the experiment's outcome.

Why is it crucial to keep controlled variables the same between different groups in an experiment?

• To make the experiment more complex and challenging.

• To ensure that any observed changes are due to the independent variable only.

• To reduce the overall time required to complete the experiment.

• To allow for more variables to be tested simultaneously.

The maximum number of variables we change at a time is ​ (a)   ​

• one
• three
• five
• ten