Lesson 18

What is the process called when rocks and minerals are broken down into smaller pieces?

• Erosion

• Deposition

• Weathering

• Meandering

Which term describes the movement of sediments by natural forces like water or wind?

• Sediment

• Erosion

• Deposition

• Meanders

What happens during deposition?

• Rocks are broken into smaller pieces

• Sediments settle in new places, forming new land features

• Curves or bends are created in a river

• Valleys are shaped by fast-flowing rivers

What are meanders?

• Small pieces of rock or mineral

• Curves or bends in a river created by erosion

• Narrow valleys shaped by fast-flowing rivers

• Broad valleys shaped by glacial movement

What type of valleys are shaped by fast-flowing rivers?

• U-shaped valleys

• V-shaped valleys

• Meanders

• Sediment valleys

What natural processes are responsible for the formation of the Grand Canyon?

• Volcanic eruptions and earthquakes

• Weathering and erosion

• Glacial movements and landslides

• Tectonic plate shifts and tsunamis

What do weathering and erosion help shape on our planet?

• The atmosphere

• The planet's surface

• The ocean currents

• The climate

What is the process called that breaks down rocks, soil, and minerals into smaller pieces?

• Erosion

• Deposition

• Weathering

• Sedimentation

Which of the following is a key factor in the process of weathering?

• Temperature changes

• Magnetic fields

• Solar radiation

• Electrical currents

What is the term for the movement of weathered sediments by wind, water, ice, or gravity?

• Weathering

• Erosion

• Deposition

• Sedimentation