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DO NOW

DO NOW . 1 . What boundary do plates move apart? 2. What boundary do plates come together? 3. What boundary do plates slide past one another? 4. What boundary does a fault form at? 5. What boundary does a trench or a volcanic arch for at?. Key Questions. 1. what is erosion?

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DO NOW

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  1. DO NOW 1 . What boundary do plates move apart? 2. What boundary do plates come together? 3. What boundary do plates slide past one another? 4. What boundary does a fault form at? 5. What boundary does a trench or a volcanic arch for at?

  2. Key Questions • 1. what is erosion? • 2. What human activities cause erosion? • 3. What is logging? • 4. What is mining? • 5. What is farming? • 6. What is construction?

  3. 1. What is erosion? 1. Erosion is the natural movement of sediment from one place to another

  4. 2. What human activities cause erosion? • 2. Humans cause erosion by logging, mining, farming, and construction.

  5. 3. What is logging? • Clear Cutting-cutting down all trees in an area 1. Tree roots die 2. Decay takes place 3. Nothing left to anchor soil 4. rain washes soil away

  6. 4. What is mining? • Strip Mining-remove surface • Open Pit-cut large pits • Remove plant roots that anchor soil Open pit Strip mining

  7. 5. What is farming? • Farming- • Dust Bowl- 1. removed grasses 2. Planted wheat 3. drought-little or no rain 4. wheat died 5. wind blew soil away 6. only dust left

  8. 6. What is construction? • Clear land and remove roots that anchor soil

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