Erosion Control

Why would people go through the trouble to terrace (cut steps) on steep hillsides or mountainsides?

• to slow down rain erosion

• to make it easier to cut grass

• it looks prettier

Tags

NGSS.MS-ESS2-2

Levees control flood erosion by

• forming a wall in the middle of a flowing body of water.

• forming a gate in the middle of a body of water.

• forming a wall around a body of water.

Tags

NGSS.MS-ESS3-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

What keeps sand dunes from being blown away by wind at the coast?

• digging holes in the dunes

• roots of sea oats hold the sand in place

• fences placed next to the sand dunes

Walls that can control flooding include

• dams

• contour farming

• levees

• sand dunes

• beach reclamation

Tags

NGSS.MS-ESS3-2

NGSS.MS-ETS1-2

A city crew cleans the storm drains as a storm is approaching. Why is this management important? Storm drains...

• are a wall that keeps the wind from blowing soil away.

• allow water to quickly move underground causing less erosion.

• keep ocean waves from carrying sand away from the beach.

Tags

NGSS.MS-ESS3-2

NGSS.MS-ESS3-4

What is it called when people pump sand back onto a beach to rebuild it after a storm washes it out to sea?

• Beach Reclamation

• Storm Drain Management

• Jetty

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-4

NGSS.MS-ETS1-1

Dams are walls that are built in the middle of a flowing body of water the control the flow of water.

• True

• False

Tags

NGSS.MS-ETS1-1

Jetties can be built at the shore to encourage deposition of sand on the beaches.

• True

• False

Tags

NGSS.MS-ESS3-4

NGSS.MS-ETS1-3

A farmer is having trouble with rain erosion. Which of the following methods could be used to control this problem?

• windbreak

• terracing

• strip or contour farming

• sand dunes

A tropical storm is approaching the coast. What methods do they use to protect them from rising waters from the storm?

• dams

• seawalls

• sand dunes

• windbreaks

Tags

NGSS.MS-ESS3-2

NGSS.MS-ETS1-3