Erosion by Wind & Waves

Erosion by Wind & Waves

Kangaroo Island, Australia

Rocks shaped by wind and waves

Wind Erosion

• Two ways wind erodes land are saltation and deflation

• Saltation is when particles are picked up by the wind and skip and bounce along

• Deflation is when fine, dry soil particles are blown away

• Two types of wind deposits are dunes and loess

• Dunes are mounds of wind-deposited sand (most common)

• Loess is a thick deposit of yellowish, fine-grained sediment

Multiple Choice

The best known and most common wind deposits are called

• deflations

• saltation

• dunes

• loess

HABOOB

Phoenix, Arizona

August 2020

BIG DUST STORM

Multiple Select

WIND EROSION

The two ways wind erodes land are ____

(Check all that apply)

• dunes

• deflation

• loess

• saltation

• migration

Multiple Select

The two types of wind deposits are ____

(check all that apply)

• dunes

• saltation

• deflation

• loess

• haboob

Wave Erosion

• Shoreline features include: sea cliffs, sea caves sea arches sea stacks terraces, and beaches

• Deposition of sediments form beaches

• Coastlines are constantly changing as sea level changes

• Barrier islands are long, narrow offshore ridges of sand (examples include Nags Head, Santa Rosa Island, FL)

• Human activities, including development and pollution, threaten coastal resources and habitat

Multiple Choice

When the cave breaks through the headland it forms a natural ____.

(click on the picture to enlarge)

• cave

• arch

• headland

• stack

Multiple Choice

Sediment deposits (created by waves) along the shore are called

• beaches

• sea arches

• headlands

• sea cliffs

Multiple Select

What threatens coastal resources and habitats?

(check all that apply)

• global warming

• pollution

• weather

• wind

• development