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The Earth PowerPoint Presentation

The Earth

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The Earth

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  1. The Earth

  2. The Earth contains 3 layers Crust Magma (upper & lower mantle) Core

  3. Crust • The Earth is divided into 9 large plates and several smaller ones. • These plates are called tectonic plates. • These plates are not fixed, they float on top of mantle. Tectonicplates Mantle

  4. Crust • The crust is uneven. • Some become continents and some become oceans. 4 A B G 2 1 1 D 3 F C E

  5. Crust Continents Ocean A: Asia B: Europe C: Australia D: Africa E: Antarctica F: North America G:South America 1. Pacific Ocean 2. Atlantic Ocean 3. Indian Ocean 4. Arctic Ocean

  6. Movement of Tectonic Plates (earthquakes)

  7. What are the natural phenomena in anearthquake? Volcanic eruption Crater (lake) Tidalwave

  8. What are the bad effects of anearthquake? Buildings and bridges were collapsed Fire People were killed

  9. What can we do? • Scientists collect data about earthquakes. • Build buildings which can minimize the bad effects of earthquake. • have fire drills.