FLASHCARDS SC.6.E.6.1

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What is weathering?

Back

The process by which rocks and minerals break down into smaller pieces due to physical or chemical changes.

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What is an example of physical weathering?

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Ice wedging—water seeps into cracks, freezes, expands, and breaks the rock apart.

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What is an example of chemical weathering?

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Acid rain dissolving limestone, changing its composition.

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What is erosion?

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The movement of sediment or soil from one location to another by wind, water, ice, or gravity.

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How does water cause erosion?

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Rivers carve valleys and canyons over time by carrying away sediment.

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How does wind cause erosion?

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Wind blows sand and dust, shaping rock formations like those in deserts.

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What is deposition?

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The process by which sediments settle and accumulate in a new location.

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What is an example of deposition?

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Sand dunes forming as wind deposits sand in one place.

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How do constructive and destructive forces shape Earth's surface?

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Constructive forces build up landforms (e.g., deposition), while destructive forces break them down (e.g., erosion and weathering).

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How do humans influence weathering and erosion?

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Deforestation increases erosion, while pollution accelerates chemical weathering.