7th grade review

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What is the dependent variable in an experiment?

Back

The dependent variable is the outcome that is measured in an experiment, which is affected by changes in the independent variable.

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What is weathering?

Back

Weathering is the natural process by which atmospheric and environmental agents, such as wind, rain, and temperature change, disintegrate and decompose rocks.

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What are scientific models?

Back

Scientific models are representations of objects, systems, or events used to understand the natural world, visualize complex processes, and communicate ideas.

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Why is it important for scientists to publish all steps of their experiments clearly?

Back

It allows other scientists to replicate their results, ensuring the reliability and validity of the findings.

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What does it mean if Layer B is older than Layer C?

Back

It indicates that Layer B was deposited before Layer C, based on the principle of superposition in geology.

Front

What is an independent variable in an experiment?

Back

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 erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

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What is the purpose of a scientific model?

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The purpose of a scientific model is to simplify complex systems, making them easier to understand and predict outcomes.

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What is the difference between weathering and erosion?

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Weathering is the breakdown of rocks, while erosion is the movement of those broken materials from one location to another.

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What does it mean for a model to be an exact replica?

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An exact replica means that the model is a precise copy of the original, which is not necessary for scientific models.