Erosion
What is erosion?
Answer: The process by which soil and rock are removed from the Earth's surface.
What is deposition?
Answer: The process where materials are dropped or settled out of water or wind.
What is weathering?
Answer: The breaking down of rocks into smaller pieces.
What is a renewable energy source?
Answer: An energy source that can be replenished naturally, like solar energy.
What natural forces can cause erosion?
Answer: Water, wind, and ice.
What is one example of deposition?
Answer: The formation of a delta at a river's mouth.
What are the two types of weathering?
Answer: Physical weathering and chemical weathering.
Name a nonrenewable energy source.
Answer: Coal or oil.
What is one way that plants help prevent erosion?
Answer: Their roots hold the soil in place.
How can deposition affect habitats?
Answer: It can create new land and alter ecosystems.
Give an example of physical weathering.
Answer: Ice freezing in cracks of rocks and breaking them apart.
What is hydroelectric power?
Answer: Electricity generated by using the energy of moving water
Name a human activity that can increase erosion.
Answer: Deforestation or construction.
What is sediment?
Answer: Small particles of rock and soil that are transported by erosion.
What happens to rocks during chemical weathering?
Answer: Their minerals change due to reactions with water or air.
Who was John Wesley Powell?A
nswer: An explorer known for his study of the Colorado River and the Grand Canyon.
How does erosion affect landforms over time?
Answer: It can shape mountains, valleys, and canyons.
How does sediment size affect deposition?
Larger sediment settles faster than smaller sediment.
How can weathering contribute to soil formation?
Answer: It breaks down rocks into smaller particles that mix with organic material.
Why are fossils important to scientists?
Answer: They provide information about past life and the Earth's history.