ES Unit 2 Review 3 Formative

Deflation creates a stony surface layer called

• desert pavement

• loess

• dunes

• blowout

Tags

NGSS.MS-ESS2-2

(a)   happens when windblown sand cuts and polishes exposed rock surfaces.

Thick deposits of wind-blown silt are called _____

• loess

• desert pavement

• blowouts

• deflation

Tags

NGSS.MS-ESS2-5

Sand deposits in mounds or ridges are called (a)  

Dunes are often steeper on one side than the other.

• true

• false

Isolated sand dunes shaped like crescents

• barchan dunes

• transverse dunes

• longitudinal dunes

• star dunes

Dunes formed in a series of ridges, perpendicular to the direction of the prevailing wind.

• transverse dunes

• longitudinal dunes

• parabolic dunes

• star dunes

Tags

NGSS.MS-ESS2-5

Isolated hills of sand mostly found in parts of the Sahara and Arabian deserts.

• star dunes

• barchan dunes

• transverse dunes

• longitudinal dunes

Long ridges of sand that form parallel to the prevailing wind.

• longitudinal dunes

• barchan dunes

• transverse dunes

• star dunes

When the wind lifts and removes loose particles such as clay and silt, (a)   occurs.