Weathering

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Weathering Erosion
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Science Concepts

• The student knows that natural events and human
  activity can alter Earth systems. The student is
  expected to
• (A)  describe and predict the impact of
  different catastrophic events on the Earth
• (B)  analyze effects of regional erosional
  deposition and weathering

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Learning Objectives

• The learner will be able to identify erosion.
• identify effect of chemicals on land.
• identify effect of wind on land.
• identify effect of ice on land.
• identify effect of water on land.
• identify effect of temperature on land.
• The learner will explain the causes of erosion.
• The learner will compare the effects of different
  types of erosion
• The learner will predict the outcomes of various
  means of erosion.

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Engage

• Mudslide
• Flooding

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Explore 1

• Take a potted plant out of the pot, with soil
  intact. Discuss how the roots of the plant help
  to hold the soil in place. Ask what would happen
  if the plant was not in a pot, but in the ground
  and water keep running over it. Introduce the
  term erosion and discuss how wind, water, and ice
  can cause erosion. Ask students if and where they
  have ever seen the effects of erosion.
• Point out evidence of erosion on the school
  grounds. Some good examples are often near
  drains, drain pipes, and at the edges of the
  blacktop.

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Flooding
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Sea Arches
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Beach Erosion
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River Erosion
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Mudslide
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Chinas Yellow River

• The 1887 Yellow River floods devastated the area,
  killing between 900,000-2,000,000 people. It was
  one of the deadliest natural disasters ever
  recorded. For centuries, the farmers living near
  the Yellow River had built dikes to contain the
  rising waters, caused by silt accumulation on the
  riverbed. In 1887, this rising riverbed, coupled
  with days of heavy rain, overcame the dikes,
  causing a massive flood. It was one of the worst
  floods in history, though the later 1931 Yellow
  River flood may have killed as many as four
  million people.

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Hubbard Glacier in Alaska
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Matterhorn in Switzerland, a geographical anomaly
produced by glaciers
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Sahara Desert
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Kalahari Desert
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Gobi Desert in China
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Dust Bowl, the man-caused environmental disaster
of the 1930s
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Elaborate
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Horseshoe Bend