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

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Presentation on theme: "Ch. 5: Wind & Deserts P. 141-150."— Presentation transcript:

1 Ch. 5: Wind & Deserts P

2 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

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

4 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 ______________________________________

5 What are some of the common false myths about deserts?

6 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

7 Label Desert Landscape
Figure 6.27 A

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

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

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

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

12 Describe the Formation & migration of sand dunes

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

14 Sand dune types: Label and describe


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