Weathering, Erosion, and Deposition

How do glaciers contribute to erosion?

• They deposit sediment in river valleys.

• They erode the landscape by scraping and scouring the ground as they move.

• They create lakes by melting.

• They increase soil fertility by mixing minerals.

What are some agents of mechanical weathering?

• Chemical reactions in soil

• Ice wedging, root growth, and impacts.

• Erosion by wind and water

• Formation of sedimentary rocks

What is deposition?

• The process in which sediments, soil, and rocks are added to a landform or land mass.

• The process of eroding landforms through wind and water.

• The process of transforming liquid water into vapor.

• The process of breaking down rocks into smaller pieces.

What is chemical weathering?

• The process that breaks down rocks through chemical reactions, often involving water.

• The physical breakdown of rocks into smaller pieces without changing their composition.

• The process of transporting sediments from one location to another.

• The formation of new minerals from the alteration of existing ones.

How does water contribute to chemical weathering?

• By dissolving certain rocks and minerals.

• By freezing and expanding in cracks.

• By transporting sediments to new locations.

• By increasing soil erosion rates.

What is erosion?

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

• The process of planting trees to prevent soil loss.

• The method of using chemicals to break down rocks and minerals.

• The technique of building dams to control water flow.

What is hydrolysis?

• A chemical weathering process where water reacts with minerals to form new minerals and soluble salts.

• A process of breaking down food in the stomach using acids.

• A method of purifying water by boiling it.

• A technique used in photography to develop images.

What is abrasion in the context of weathering?

• The process of chemical breakdown of rocks

• The wearing away of rock surfaces through friction and impact with other materials.

• The formation of new minerals from existing rocks

• The movement of rocks due to gravity

How does temperature affect weathering?

• Temperature changes can cause rocks to expand and contract, leading to mechanical weathering.

• Temperature has no effect on weathering processes.

• Higher temperatures always increase the rate of chemical weathering.

• Temperature only affects weathering in tropical climates.

What is differential weathering?

• The even weathering of all rocks in a landform.

• The uneven weathering of different rocks in the same landform.

• The process of rocks becoming more uniform over time.

• The weathering that occurs only in wet climates.