Earth science 7.3

Earth science 7.3

• 1.
  7.3 Landscapes Shapedby Wind
• 2.
  Deflation The liftingand removal of loose material by wind
• 3.
  Desert Pavement Alayer of coarse pebbles and gravel created when wind removed the finer material
• 4.
  Loess Deposits ofwindblown silt, lacking visible layers, generally light yellow, and capable of maintaining a nearly vertical cliff.
• 5.
  dune A hillor a ridge of wind-deposited sand
• 6.
  Key Concept Winderodes in the desert in two ways: deflation and abrasion
• 7.
  Key Concept Thewind can create landforms when it deposits its sediments, especially in deserts and along coasts. Both layers of loess and sand dunes are landscape features deposited by water.
• 8.
  Key Concept Unlikedeposits of loess, which form blanket-like layers over broad areas, winds commonly deposit sand in mounds or ridges called dunes.
• 9.
  Key Concept Whatform sand dunes assume depends on the wind direction and speed, how much sand is available and the amount of vegetation.