Lewis Landforms lessons 5-8

Front

What is physical weathering?

Back

Physical weathering is the process of breaking down rocks into smaller pieces without changing their chemical composition. An example is frost wedging, where water freezes in cracks of rocks and expands, causing the rock to split.

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What is erosion?

Back

Erosion is the process of moving soil and rock from one location to another, often caused by water, wind, or ice. An example is rain washing away soil from a hillside.

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What is deposition?

Back

Deposition is the process of dropping sediment in a new location after it has been transported by erosion. An example is sand being dropped on the beach by waves.

Front

What is chemical weathering?

Back

Chemical weathering is the process that changes the chemical composition of rocks, often through reactions with water, acids, or gases. An example is acid rain wearing away limestone.

Front

What is frost wedging?

Back

Frost wedging is a type of physical weathering where water seeps into cracks in rocks, freezes, and expands, causing the rock to break apart.

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What is an example of physical weathering?

Back

An example of physical weathering is lichens growing on rock, which can break down the rock over time.

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What is an example of erosion?

Back

An example of erosion is a river carrying away soil and rocks as it flows.

Front

What is an example of deposition?

Back

An example of deposition is when a river slows down and drops sand and pebbles at its mouth, forming a delta.

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What is oxidation in weathering?

Back

Oxidation is a type of chemical weathering where oxygen reacts with minerals in rocks, often causing rusting.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breaking down of rocks, while erosion is the movement of those broken pieces to a new location.