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The Changing Earth PowerPoint Presentation
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The Changing Earth

The Changing Earth

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The Changing Earth

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  1. The Changing Earth

  2. Chapter Fourteen: Weathering and Erosion • 14.1 Weathering • 14.2 Erosion • 14.3 Rivers Shape the Land

  3. 14.3 Rivers shape the land • Erosion by rivers is an important part of why land looks the way it does at any given time. • Valleysare low-lying land features that are surrounded by higher land features such as hills and mountains.

  4. 14.3 Rivers shape the land • Glaciers scrape U-shaped valleys through land areas. • Rivers tend to cut V-shaped valleys.

  5. 14.3 Meanders • Some rivers form S-shaped curves called meanders. • Water flows at different speeds in different parts of the river.

  6. 14.3 Meanders • A braided streamhas many channels that criss-cross each other. • Braided streams get their names from the braided appearance of their many channels.

  7. Art Connection Creative Expression with Clay • Potters have been molding clay into pots and other items since the Stone Age. • Today, it is used to produce ceramic tiles, porcelain, cement, and more.

  8. Activity Wearing Away • With your whole class, a small group, or a partner, examine your school and the surrounding grounds for evidence of mechanical and chemical weathering.