Understanding Weathering, Erosion, and Deposition

What causes rocks to break down into smaller pieces?

• Chemical reactions

• Animal activities

• Natural elements like wind and water

• Plant growth

How does water contribute to the weathering of rocks?

• By freezing and expanding in cracks

• By covering them with soil

• By absorbing into the rock minerals

• By shading them from the sun

What role do glaciers play in weathering?

• They absorb heat from the environment

• They melt and form lakes

• They transport soil

• They break and grind down rocks

How does ice contribute to the weathering of rocks?

• By increasing air humidity around rocks

• By freezing and expanding in rock cracks

• By shielding rocks from sunlight

• By providing moisture for plants

What is the term used to describe the transport of sediments from one place to another?

• Deposition

• Erosion

• Weathering

• Compaction

What happens to sediments during erosion?

• They dissolve in water

• They are carried to new locations

• They compact into solid rock

• They disappear into the air

What is the main effect of strong winds in deserts regarding sediment?

• They cause floods

• They increase the temperature

• They deposit nutrients

• They erode and transport sand

Which natural feature is formed by the deposition of sand by wind?

• Mountains

• Rivers

• Sand dunes

• Lakes

Where do sediments typically settle during deposition?

• On steep mountain slopes

• In the upper course of a river

• In areas with heavy plant growth

• Where the water flow slows down

What is a delta primarily composed of?

• Eroded rock fragments

• Deposited sediments

• Organic matter

• Volcanic ash