Study Guide Review: Prerequisite

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What is a qualitative observation?

Back

A qualitative observation describes characteristics or qualities that cannot be measured with numbers, such as color, texture, or smell.

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What is a quantitative observation?

Back

A quantitative observation involves measurements and numbers, such as height, weight, or temperature.

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What is a dependent variable?

Back

The dependent variable is the factor that is measured in an experiment; it is affected by changes in the independent variable.

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What is an independent variable?

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The independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

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What is an inference?

Back

An inference is a logical conclusion drawn from observations and prior knowledge.

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What is the purpose of a hypothesis in an experiment?

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A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

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What is the scientific method?

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The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is a control group in an experiment?

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A control group is a standard of comparison in an experiment that does not receive the experimental treatment.

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What is the difference between a theory and a law in science?

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A theory is a well-substantiated explanation of an aspect of the natural world, while a law describes a universal principle that always occurs under certain conditions.

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What is a variable in an experiment?

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A variable is any factor, trait, or condition that can exist in differing amounts or types.