Weathering, Erosion, & Deposition

What is erosion?

• Erosion is the process by which water, ice, wind, or gravity move pieces of rock and soil.

• Erosion is the process of planting trees to prevent soil loss.

• Erosion is the process of creating new landforms through volcanic activity.

• Erosion is the process of water evaporating from the soil surface.

What is weathering?

• The process of creating new rocks from minerals.

• The breaking down of rocks and minerals into smaller pieces.

• The movement of rocks from one place to another.

• The formation of soil from organic matter.

What is a common result of deposition?

• The formation of deltas at river mouths.

• The erosion of soil in valleys.

• The increase in water temperature in lakes.

• The creation of sinkholes in limestone areas.

What role does gravity play in erosion?

• Gravity has no effect on erosion.

• Gravity pulls rocks and soil down slopes, contributing to erosion.

• Gravity only affects water flow, not erosion.

• Gravity helps to hold soil in place, preventing erosion.

What is the difference between erosion and deposition?

• Erosion is the dropping of sediment, while deposition involves the movement of sediment.

• Erosion is the process of breaking down rocks, while deposition is the process of forming new rocks.

• Erosion involves the movement of sediment, while deposition is the dropping of that sediment.

• Erosion and deposition are the same processes occurring at different times.

Give an example of erosion caused by wind.

• Formation of sand dunes

• Riverbank erosion

• Glacial retreat

• Soil erosion by water

What is deposition?

• The process of eroding rocks by wind and water.

• The dropping of sediment by wind, water, ice, or gravity.

• The formation of new land by volcanic activity.

• The movement of sediment from one location to another.

What happens when glaciers melt?

• They cause sea levels to rise.

• They drop the rocks they were carrying, which is a process called deposition.

• They create new glaciers.

• They evaporate into the atmosphere.

How do plant roots contribute to weathering?

• Plant roots absorb water and nutrients from the soil.

• Plant roots grow in rocks and cause them to split, which is a form of weathering.

• Plant roots provide shelter for small animals that aid in weathering.

• Plant roots release chemicals that dissolve minerals in the soil.

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.