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Erosion, Weather & Climate

Weather plays a large part in creating the valley and mountains that we see today. Snow, rain, and wind are large factors in the continued erosion, creating deeper mountain canyons, new creeks, wider rivers, filled-in lakes and determining the type of vegetation and animals that can exist here. Climate too has an impact on erosion – although over longer periods of time. There have been at least five major ice ages in the Earth’s history. During such periods of large-scale glaciations (lasting several million years, each), Earth’s surface has been drastically reshaped – even the features of entire continents.


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Lesson 4 (or “Day 4”) Material

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Compare Contrast and Debate

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  • Position A: type position A here ….
  • Position B: type position B here ….

Resources Documents and Links

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Special Notes and Notices

Instructor Emphasis:

  • Science & Engineering Practice: Develop and use models.
  • Cross-Cutting Concept: Energy and Matter: Flows, cycles, and conservation.

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