Erosion

The video tutorial explains erosion, a process where rocks and sediments are moved by natural forces like water, wind, and ice. It discusses how erosion shapes landscapes, such as beaches and canyons, and how it can build new landforms. The tutorial also covers weathering, which breaks down rocks into smaller pieces, enabling erosion to transport them. Examples include the Grand Canyon and the Mississippi River delta. The video highlights the types of weathering: mechanical, chemical, and organic.

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

• Water

• Ice

• Earthquakes

• Wind

What is a glacier compared to in the video?

• A rapidly melting ice sheet

• A stationary block of ice

• A slow-moving river of ice

• A fast-moving river of water

How does erosion contribute to the formation of new land?

• By carrying sediment to the ocean

• By breaking rocks into smaller pieces

• By melting glaciers

• By blowing sand into the air

Which type of weathering involves the physical breakdown of rocks?

• Thermal weathering

• Organic weathering

• Chemical weathering

• Mechanical weathering

What role do plant roots play in weathering?

• They physically break rocks apart

• They dissolve rocks with acids

• They chemically alter rocks

• They prevent erosion by holding soil