Erosion and weathering

The video explains weathering and erosion, two natural processes that shape landscapes. Weathering breaks down rocks into smaller pieces through expansion and contraction, water and ice, and plant roots. Erosion removes these weathered materials via rivers, waves, wind, and human activity. Both processes significantly alter the environment.

What is the primary cause of rock fragmentation in desert regions?

• Animal activity

• Daily temperature changes

• Human interference

• Chemical reactions

How does water contribute to the weathering of rocks?

• By providing nutrients

• By expanding when frozen

• By dissolving minerals

• By attracting animals

Which of the following is NOT an agent of erosion?

• Waves

• Plants

• Wind

• Rivers

What role do humans play in the process of erosion?

• They are a powerful tool of erosion

• They only cause weathering

• They prevent erosion

• They have no impact on erosion

What is the main difference between weathering and erosion?

• Weathering is caused by water, while erosion is caused by wind

• Weathering occurs only in deserts, while erosion occurs everywhere

• Weathering is a human activity, while erosion is natural

• Weathering involves breaking down rocks, while erosion involves removing them