Unit 3 Experimental Design pre-test

Front

What is a factor that is measured for change in an experiment?

Back

Dependent Variable: The factor that is observed and measured in an experiment to see how it is affected by changes in the independent variable.

Front

What is the minimum number of trials recommended in an experiment?

Back

3: It is recommended to conduct at least three trials to ensure reliable and valid results.

Front

What is the factor that the scientist changes on purpose in an experiment?

Back

Independent Variable: The factor that is intentionally manipulated by the scientist to observe its effect on the dependent variable.

Front

In Penelope's cookie experiment, what is the independent variable?

Back

Oven Temperature: The variable that Penelope changes to see how it affects the texture of the cookies.

Front

How many independent variables should an experiment have for it to be valid?

Back

1: An experiment should only have one independent variable to ensure that the results are due to that variable alone.

Front

What is a control in an experiment?

Back

Control: A standard for comparison in an experiment that remains constant and is not changed.

Front

What is a constant in an experiment?

Back

Constant: Factors that are kept the same throughout the experiment to ensure that the test is fair.

Front

What is the purpose of conducting multiple trials in an experiment?

Back

To increase the reliability of the results and account for variability in data.

Front

What is the difference between independent and dependent variables?

Back

Independent Variable: The factor that is changed; Dependent Variable: The factor that is measured.

Front

Why is it important to have a hypothesis in an experiment?

Back

A hypothesis provides a testable prediction that guides the experimental design.