Erosion Control

Erosion Control

What methods can be used to slow the destructive process of erosion?

Multiple Choice

Which type of process is erosion?

• constructive

• destructive

Control Flood Erosion​

Slowing Floods Will Cause Less Erosion

Dams

Levees

Storm Drain Management​

Dams

• A wall in the middle of a flowing body of water (rivers, streams, creeks)

• Prevents flooding upstream or downstream

• Dams Video - Brain Pop

Multiple Choice

What is the purpose of a dam?

• prevent rain runoff

• prevent wind erosion

• prevent erosion by ocean waves

• prevent flooding

Multiple Choice

Where are dams built?

• in the middle of the water

• around a body of water

• on the beach

• on the roadway

Levee

• A wall (made of cement, earthen materials, or stones) around a body of water

• Keeps flood waters from washing soil away

• Levee Videos - Google Classroom

Multiple Choice

What is the purpose of a levee?

• prevent flooding

• prevent wind erosion

• prevent ocean water erosion

• prevent rain runoff

Multiple Choice

Where are levees built?

• in the middle of the water

• around the edge of the water

• on the beach

• in roadways

Storm Drain Management

• ​Controls Soil Erosion

• Keep storm drains clean and clear

• Keeps storm waters drained off the surface to prevent floods from washing too much soil away

Multiple Choice

Which method of erosion control needs to be clean and clear to keep flood waters from washing away soil?

• seawalls

• terracing

• windbreaks

• storm drains

Control Coastal Erosion​

Methods to Slow Erosion at the Shore

Seawalls/Levees

Sand Dune Management

Beach Reclamation

Seawall

• ​Controls Coastal Erosion

• Wall at the shore made of cement, stone, sand bags, or mounds of sand

• Protects land at the shore from being washed away by ocean waves

Multiple Choice

Which method of erosion control is a wall between the ocean and shore that protects the soil from being washed away by ocean waves?

• terracing

• seawalls

• sea oats

• destructive

Sea Oats on Sand Dunes

• ​Coastal Erosion

• Plants hold sand dunes in place

• Roots of the plants protect the natural seawalls from wind blowing it away

Multiple Choice

The roots of sea oats help keep the wind from blowing sand dunes away.

• True

• False

Beach Reclamation

• Rebuild (reclaim) a beach by pumping sand onto the shore

• Deposits sand on a beach after if has been washed away

Multiple Choice

What process pumps sand on the beach to rebuild it after it has been washed away?

• terracing

• seawalls

• beach reclamation

• levee

Control Soil Erosion​

Methods to Slow Erosion on Land Due to Rain or Wind

Terracing

​Contour Plowing or Strip Farming

​Windbreak

Terracing

• Controls Soil Erosion​

• Cutting flat surfaces into a hillside

• Slows rain runoff to keep the soil from being washed off the hillside

Multiple Choice

Which method of erosion control protects a hillside from rain runoff?

• terracing

• seawall

• sea oats

• sand dune

Strip Cropping or Contour Farming

• ​Controls Soil Erosion

• Plowing patterns with the shape of the land

• Slows rain runoff

Multiple Choice

Why do farmers use strip cropping or contour farming?

• slow rain runoff

• slow wind erosion

• speed up wind

• speed up rain runoff

Windbreak

• ​Controls Soil Erosion

• Barriers around an area with varying levels

• Slows the speed of wind and prevents it from blowing it away

Multiple Choice

A windbreak slows down which agent (or cause) of erosion?

• water

• wind

• glaciers

• gravity