Erosion and Weathering

What is a common example of erosion?

• A river carrying away soil from its banks.

• A tree growing in a forest.

• A mountain forming over time.

• A lake filling with rainwater.

What is glacial erosion?

• The process of glaciers melting and forming lakes.

• The slow process of glaciers moving and scraping away rocks and soil.

• The rapid movement of ice sheets during a warm period.

• The formation of glaciers from accumulated snow over time.

What role does wind play in erosion?

• Wind helps to create new landforms by depositing sediment.

• Wind can carry away small particles of soil and sand, contributing to erosion.

• Wind has no effect on erosion processes.

• Wind only affects water erosion, not soil erosion.

What is erosion?

• Erosion is the process by which small pieces of rocks and soil are carried away to new locations.

• Erosion is the process of plants growing in rocky areas.

• Erosion is the formation of new soil from decomposed organic matter.

• Erosion is the movement of water from one place to another.

What is the difference between erosion and weathering?

• Erosion involves the breaking down of materials, while weathering is the movement of materials.

• Erosion is a chemical process, while weathering is a physical process.

• Erosion involves the movement of materials, while weathering is the breaking down of materials.

• Erosion occurs only in water, while weathering occurs only in air.

What is chemical weathering?

• Chemical weathering involves the physical breakdown of rocks.

• Chemical weathering involves the chemical alteration of minerals in rocks, often due to water or acids.

• Chemical weathering is the process of erosion caused by wind.

• Chemical weathering refers to the formation of new minerals from existing ones.

How do plants contribute to weathering?

• Plants weather rocks by growing roots into cracks, which can expand and break the rock.

• Plants absorb water, which helps to dissolve minerals in the rocks.

• Plants release acids that chemically break down rocks.

• Plants provide shade, which reduces temperature fluctuations that can cause rock fractures.

How does water cause weathering?

• Water can seep into cracks in rocks, freeze, and expand, causing the rocks to break apart.

• Water evaporates quickly, leaving minerals behind that weaken the rock.

• Water flows over rocks, smoothing their surfaces without breaking them.

• Water absorbs heat from the sun, causing rocks to expand and contract.

What is mechanical weathering?

• The chemical alteration of rocks due to environmental factors.

• The physical breaking down of rocks without changing their chemical composition.

• The process of rocks melting due to extreme heat.

• The transportation of sediments by wind or water.

What is deposition?

• Deposition is the process where eroded materials are dropped off in a new location.

• Deposition is the process of breaking down rocks into smaller pieces.

• Deposition is the process of transporting materials from one place to another.

• Deposition is the process of forming new rocks from molten lava.