Changes to the Earth's Surface

Flood water pounding against a canyon wall and wearing it down

• Weathering
• Erosion
• Deposition

Rain washing away soil from a hillside

• Weathering
• Erosion
• Deposition

Layers of sediment forming at the bottom of the ocean floor

• Weathering
• Erosion
• Deposition

Glaciers dropping rock and sand to form moraines (deposition of debris)

• Weathering
• Erosion
• Deposition

Deltas forming at the mouths of rivers

• Weathering
• Erosion
• Deposition

Wind blasting sand at rock and carving out arches

• Weathering
• Erosion
• Deposition

Flood waters moving soil from one location to another

• Weathering
• Erosion
• Deposition

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place
• makes the rocks last longer
• expands cracks and breaks rocks
• causes rocks to fall in landslides

What is sediment?

• the process of rocks being broken down and carried away
• bits of rock, sand, and silt caused by the weathering of rocks
• the top layer of the soil
• decaying plant or animal material 

The type of landform shown is at the mouth of the Mississippi River. What is it called?

• coastal erosion
• a delta
• a loess
• sand dunes