Deserts

__ deserts form between 30° and 50° latitude, north or south of the equator, where atmospheric air is sinking and warming

Midlatitude (or Subtropical)

___ form in the interior regions of continents including China, Australia, and the Colorado Plateau of western North America

Semiarid deserts

___ form adjacent to cold ocean currents in places like western south America and South Africa and the Southern California coast

Coastal deserts

___ form where cold atmospheric air is sinking, in places like Antarctica, Greenland, Alaska, Canada, and Siberia

Polar deserts

___ deserts form on leeward sides of mountain ranges where dry air is sinking

Rain Shadow

__are the result of wind erosion and deposition

Sand Dunes

____ are crescent-shaped, point downwind, and form from a single dominant wind direction in an area of limited sand supply

Barchan (Crescentic) sand dunes

____ are relatively straight and elongate, and form perpendicular to a single dominant wind direction in an area with a large sand supply

Transverse (and Barchanoid) sand dunes

___are crescent-shaped, point upwind, and form around blowouts from a single dominant wind direction in an area with a large sand supply

Parabolic sand dunes

____ are extremely long, straight, tall, and regularly spaced and form parallel to the prevailing wind direction from a large supply of sand

Longitudinal (or Linear or Seif) sand dunes

___ indicate a changing wind direction

Star sand dunes

Wind erosion can result in other features such as __ , __, and ___

Desert Pavement, Ventifacts, and Yardangs

The Colorado Plateau mostly consists of flat-lying sedimentary rocks and is dominated by ___ such as plateaus, mesas, buttes, cuestas, hogbacks, and monoclines

Erosional Landforms

The Basin and Range is a series of fault-bounded mountain ranges separated by flat valley floors and is dominated by ___ such as alluvial fans, bajadas, playas, playa lakes

Depositional landforms

___ and ___ can occur anywhere in the United States but are most common in the Southwest.

Dust Storms, Haboobs