Rocks and the Rock Cycle: Weathering and Erosion

The video tutorial explains how pebbles and rocks become smooth through weathering and erosion. It describes the processes of physical and chemical weathering, highlighting the role of water, ice, and gravity. The tutorial also covers how moving water causes erosion, using the Colorado River and the Grand Canyon as examples.

What process is responsible for making pebbles smooth over time?

• Deposition

• Sedimentation

• Weathering

• Erosion

Which of the following is NOT a force responsible for weathering?

• Ice

• Gravity

• Water

• Wind

What is the role of acids in chemical weathering?

• They polish rocks.

• They build up rocks.

• They break down rocks.

• They transport rocks.

What is the primary process that moves weathered rocks from one place to another?

• Weathering

• Erosion

• Sedimentation

• Compaction

Which river is known for its role in eroding the Grand Canyon?

• Mississippi River

• Amazon River

• Nile River

• Colorado River