The Grand Canyon SciShow

What is a canyon?

• A flat plain

• A deep gorge or gully in the earth

• A high mountain peak

• A wide sandy beach

What natural feature is primarily responsible for carving the Grand Canyon?

• Wind

• Glaciers

• The Colorado River

• Earthquakes

What is the natural process of dirt and rock being picked up from one place and moved to another called?

• Deposition

• Weathering

• Erosion

• Sedimentation

Approximately how long ago did the Grand Canyon begin to form?

• Thousands of years ago

• Hundreds of years ago

• Millions of years ago

• Billions of years ago