Scientific Investigation Review

Front

What is a variable in a scientific experiment?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types. In experiments, variables are used to test hypotheses.

Front

What is the independent variable?

Back

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

Front

What is the dependent variable?

Back

The dependent variable is the variable that is measured and affected in an experiment. It responds to changes made to the independent variable.

Front

What are constants in an experiment?

Back

Constants are the factors that remain the same throughout an experiment to ensure that the test is fair.

Front

What is a hypothesis?

Back

A hypothesis is a proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What is the purpose of a control group?

Back

A control group is used as a standard for comparison in an experiment. It does not receive the experimental treatment.

Front

What is quantitative observation?

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Quantitative observation involves measuring or counting and is expressed in numbers.

Front

What is qualitative observation?

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Qualitative observation involves descriptions that cannot be measured or counted, such as colors, textures, or smells.

Front

Why is it important to test one variable at a time?

Back

Testing one variable at a time helps to determine which variable is causing changes in the experiment.

Front

What tools can be used for quantitative observations?

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Instruments such as rulers, balances, and thermometers are used for quantitative observations.