Scientific Method and Variables

Front

A possible explanation to a problem that has not yet been tested. Educated guess.

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hypothesis

Front

This variable in an experiment is the one being deliberately changed by the scientist.

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independent variable

Front

What step does every scientific experiment begin with?

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question/problem

Front

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

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the type of liquid

Front

The summary at the end of an experiment that explains the results.

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conclusion

Front

What is the dependent variable when testing the effects of type of exercise on heart rate?

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heart rate

Front

Observations made during an experiment are called:

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data

Front

All hypothesis are accepted.

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False

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What must a scientific theory be in order to be accepted?

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widely tested and supported by extensive data

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What effect does fertilizer have on plant growth? Identify the correct step from the choices below: ask a question, state the hypothesis, collect the data, draw conclusions

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ask a question