Erosion and Weathering Concepts

The video tutorial explains erosion, the process of rocks and sediments being moved by natural forces like ice, water, wind, and gravity. It covers how water, glaciers, and wind contribute to erosion, shaping landscapes such as beaches, valleys, and canyons. The tutorial also discusses sediment transport and deposition, highlighting how erosion in one area can build up land in another. Additionally, it explains the role of weathering in breaking down rocks into sediment, which is then carried away by erosion.

What natural forces are responsible for erosion?

• Ice, water, fire, and gravity

• Ice, fire, wind, and gravity

• Fire, water, wind, and gravity

• Ice, water, wind, and gravity

Which of the following is NOT a cause of erosion?

• Volcanic eruptions

• Glaciers

• Wind

• Flowing water

How do glaciers contribute to erosion?

• By dragging rocks and carving valleys

• By creating sand dunes

• By freezing and expanding rocks

• By melting and flooding areas

What is a common result of wind erosion in deserts?

• Growth of coral reefs

• Development of forests

• Creation of sand dunes

• Formation of lakes

What is an example of a landscape formed by river erosion over millions of years?

• The Grand Canyon

• The Sahara Desert

• The Great Barrier Reef

• Mount Everest

How does erosion contribute to the formation of new land?

• By eroding mountains into flat plains

• By forming new oceans

• By depositing sediment at river mouths

• By creating new mountain ranges

What is the process that breaks down rocks into smaller pieces before erosion?

• Weathering

• Melting

• Freezing

• Erosion

Which type of weathering involves physical breaking of rocks?

• Mechanical weathering

• Thermal weathering

• Chemical weathering

• Organic weathering

Which type of weathering involves the decomposition of rocks?

• Mechanical weathering

• Chemical weathering

• Organic weathering

• Thermal weathering

What role do plant roots play in weathering?

• They break rocks apart as they grow

• They dissolve rocks chemically

• They protect rocks from weathering

• They have no effect on rocks