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Practical Earth Science

Lesson 12-1

Weathering

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Objectives

  • Define weathering.
  • Give examples of mechanical and chemical weathering.
  • Identify different soil layers.

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Mechanical Weathering

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Acid rain

Oxidation

Chemical Weathering

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Limestone Caves made when carbon dioxide in air dissolves in rain and groundwater dissolving calcite in limestone.

Chemical Weathering

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Bedrock

Topsoil

Subsoil

Soil Profiles