Controls and variables

Front

What is a control group in an experiment?

Back

The control group is the part of the experiment that serves as a basis of comparison, where the variable being tested is omitted.

Front

How many variables should be tested at one time in a controlled experiment?

Back

Only 1 variable should be tested at one time to ensure accurate results.

Front

What is the dependent variable in an experiment?

Back

The dependent variable (DV) is the variable that you measure in an experiment, which is affected by changes in the independent variable.

Front

What is the independent variable in an experiment?

Back

The independent variable (IV) is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What does it mean if a variable is constant in an experiment?

Back

A constant variable is a factor that remains unchanged throughout the experiment to ensure that the test results are valid.

Front

Why is it important to have a control group in an experiment?

Back

A control group is important because it provides a standard for comparison, helping to isolate the effects of the independent variable.

Front

What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe its effect on the dependent variable, which is measured.

Front

What is an example of a dependent variable in a study about studying habits?

Back

An example of a dependent variable could be the test grades of students, which may change based on their studying habits.

Front

What is an example of an independent variable in an experiment testing paper airplane designs?

Back

An example of an independent variable could be the wing shape of the paper airplane, which is changed to see how it affects flight distance.

Front

What is the purpose of repeated trials in an experiment?

Back

Repeated trials are conducted to ensure the reliability and accuracy of the results by minimizing the impact of random errors.