Ch. 5: Wind & Deserts P. 141-150

Deserts Geologic processes in arid climates Weathering Not as effective as in ________regions ___________weathering dominates & forms unaltered rock and mineral fragments Some ___________weathering does occur Clay forms Thin soil forms

Geological processes in arid climates How are streams in arid regions different than streams in humid regions?

Deserts: Role of water in arid climates How is Desert rainfall different than rainfall in humid regions in its effects? Most erosional work in a desert is done by ______________________________________

What are some of the common false myths about deserts?

Running Water in Deserts: Depositional features Interior drainage into basins produces depositional features such as: Alluvial fans and bajadas Explain the formation of an alluvial fan _____________________________________ ____________________________________ Playas and playa lakes

Label Desert Landscape Figure 6.27 A

Deserts :Wind Erosion Wind erodes material by: Deflation: Lifting of loose material Process of wind erosion that produces these features ______________ Abrasion: happens when ________________ __________________________________

Explain the formation of desert pavement & why disturbing desert pavement can cause further erosion Figure 6.32

What is a ventifact and how does it show it was shaped by the wind?

Deserts: Depositional Features Types of wind deposits Loess: ______________________________ Dunes: _____________________________ Characteristic features of all dunes __________________ & _________________ d

Describe the Formation & migration of sand dunes

What causes wind to deposit sediment What causes wind to deposit sediment? How does this usually happen in nature?

Sand dune types: Label and describe