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Changes to the surface of the Earth….

Changes to the surface of the Earth…. Slow Vs. Fast. Fast Changes. Slow Changes. Erosion Weathering Deposition. Volcanic eruptions Earthquakes Mudslides Landslides. Changes…. Slow…. Fast…. Weathering…. ---breaking down of rock into silt, sand or clay…. Erosion .

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Changes to the surface of the Earth….

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  1. Changes to the surface of the Earth….

  2. Slow Vs. Fast Fast Changes Slow Changes Erosion Weathering Deposition • Volcanic eruptions • Earthquakes • Mudslides • Landslides

  3. Changes….. Slow…. Fast….

  4. Weathering… ---breaking down of rock into silt, sand or clay…..

  5. Erosion ----transporting of the broken down rock caused by weathering

  6. Wind Erosion…. Wearing away by the wind, can form such formations as dunes….

  7. ICE EROSION Two types of glaciers A. Valley- U-shaped valleys, and they are high in the mountains. B. Continental glaciers cover large areas of Earth

  8. Water Water and Wind are both agents of erosion and weathering.

  9. Which of the following is the breaking down of rock into silt, sand and clay? • Erosion • Weathering • Deposition • Landslide

  10. Fastest Responders (in seconds)

  11. Which of the following is the transporting of silt, sand or clay into a new location? • Erosion • Weathering • Deposition • Delta

  12. Fastest Responders (in seconds)

  13. Fast Changes!!!!

  14. Hurricanes

  15. Earthquakes….

  16. Review (Slow v. Fast) Some changes are slow! Some changes are fast!

  17. Which of the following would be considered a fast change to the Earth’s surface? • A tsunami taking out a coastline • A river eroding soil along the shoreline and forming a delta • Wind carrying a sand in the dessert and making a dune. • deposition

  18. Fastest Responders (in seconds)

  19. Landforms • Glaciers or large sheets of ice form GLACIAL MORAINES – Cape Cod and Long Island are both GLACIAL MORAINES. • Glacial moraines are formed as large pieces of ice push along the earth’s surface leaving behind large pieces of sediment. The large pieces of sediment form a landform known as the glacial moraine.

  20. Landforms continued… • Dunes are formed from wind erosion. They are formed slowly over time.

  21. Landforms cont… • Deltas are formed when water (rivers, streams or lakes) pick up sediment and deposit them into a new location. Over time, it creates a land mass known as a delta.

  22. Mountain Formation • Let’s look at a video… http://www.brainpop.com/science/earthsystem/mountains/zoom.weml The earth is made up of plates. The The plates are in constant movement. Sometimes plates collide, energy is released and new landforms are produced. Sometimes plates pull apart and allow magma to come to the earth’s surface.

  23. Which of the following is made from river deposited sediments? • Dune • Delta • Glacial Moraine • Igloo

  24. Fastest Responders (in seconds)

  25. Which of the following is a landform that is made from wind erosion? • Delta • Dune • Glacial Moraine • Igloo

  26. Fastest Responders (in seconds)

  27. Pangea Theory that our world consisted of one giant “SUPER CONTINENT.” Fossils provide evidence of what organisms lived before us… What type of rock would I find a fossil in and why? Igneous, metamorphic, or sedimentary?

  28. What have we learned? • What are some slow changes? • What are some fast changes? • What is landform is made from water erosion? • What is a sand dune? What type of erosion forms a dune? • What is weathering? ADVANCED….. How would freezing and thawing affect the surface of the earth?

  29. Participant Scores

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