Earth's changing surface

A deep valley with steep walls that cut into the earth caused by erosion from running water.

• Valley
• Canyon
• Gulf
• River

This picture shows a 

• landform made by depositon
• landform made by glacier
• landform made by wind
• landform made by weathering

This arch was made by ____ erosion

• plant
• ice
• wind
• people

Deltas can be found when rivers ...

• move  too slowly
• empty into the ocean
• move too quickly
• turn

Deposition is the process by which eroded earth materials settle and build in a new place. 

• True
• False 

How are canyons formed?

• When ice, wind and water carve rock out of the floor of a valley.

• When water melted snow on the floor of a valley.

• When a river dried up on the floor of a valley.

• When ice, wind, and water swept sand into the floor of a valley.

Which of these landforms were made by deposition?

• River mouth 
• Delta 
• Valley 
• Canyon 

How does a delta form?

• ocean waves deposit it on the beach
• it's just a river that empties into an ocean or lake
• the current of the river speeds up at the mouth causing sediment to wash away
• the current of the river slows down causing sediment to deposit

What does weathering mean?

• to move
• to settle in a new spot
• to break apart
• to sit still

What does erosion mean?

• to break apart
• to settle in new spot
• to move
• to sit still