The Rock Cycle: Weathering

The video explains how rocks become smooth and round through the action of waves and rubbing against each other over many years. It introduces weathering as the process that breaks down rocks and other materials on Earth's surface into smaller pieces, with agents like water, ice, and chemicals. The Grand Canyon is highlighted as an example of weathering over millions of years, with the Colorado River playing a role in erosion by carrying away weathered materials. Erosion is defined as the transportation of weathered particles from one place to another, often by water or wind.

What natural process causes rocks to become smooth and round over time?

• Melting

• Rubbing against each other

• Freezing

• Evaporation

Which of the following is NOT an agent of weathering?

• Chemicals in rainwater

• Wind

• Moving water

• Ice

What is the primary role of the Colorado River in the Grand Canyon?

• Depositing sediments

• Carrying away weathered materials

• Forming glaciers

• Creating new rocks

How does erosion differ from weathering?

• Erosion only occurs in deserts

• Erosion creates new landforms

• Erosion transports weathered materials

• Erosion involves breaking down rocks

Which force is NOT responsible for carrying away weathered rock particles?

• Fire

• Gravity

• Water

• Wind