Erosión y meteorización

The video tutorial explains the processes of weathering and erosion. Weathering is the breakdown of rocks into smaller pieces through expansion, contraction, ice formation, and plant roots. These fragments can become part of the soil unless eroded. Erosion involves the transport of weathered materials by rivers, waves, wind, and animals, significantly altering landscapes.

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

• Animal activity

• Daily temperature changes

• Chemical reactions

• Wind erosion

How do plant roots contribute to the weathering of rocks?

• By absorbing water from the rocks

• By secreting acids that dissolve rocks

• By penetrating cracks and forcing them to widen

• By providing shade that cools the rocks

What happens to rocks fragmented by weathering if they are not eroded?

• They remain unchanged

• They become part of the soil

• They dissolve in water

• They form new rocks

Which natural force is NOT mentioned as a cause of erosion?

• Rivers

• Wind

• Waves

• Volcanoes

How do humans and animals contribute to erosion?

• By moving soil and rocks

• By planting trees

• By creating artificial lakes

• By building dams