Earth

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Earth

  1. 1. by Eva Hugas
  2. 2. ONCE UPO N A TIME…THE EARTH WAS DIFFERENT FROM TODAY by Eva Hugas
  3. 3. THEOR Y THATTHE RE’S A SAYS THATALL PRESENTCONTINENTS WEREONCE TOGETHER by Eva Hugas
  4. 4. by Eva Hugas
  5. 5. THIS “SUPERCONTINENT” IS CALLED PANGAEA. IT MEANS ‘ALL LANDS’ IN GREEK by Eva Hugas
  6. 6. THE PANGAEA BROKE UP , FORMING THE CONTINENTS. THESE CONTINENTS ARE NOT FIXED, BUT THEY ARE MOVING, BECAUSE THE CRUST ( THE EARTH’S LAYER WHERE WE LIVE) IS DIVIDED INTO SEVERAL PLATES, CALLED TECTONIC PLATES.by Eva Hugas
  7. 7. WHEN A PLATE COLLIDES WITH ANOTHER ONE EARTHQUAKES AND ERUPTIONS OF VOLCANOES ARE CAUSED.by Eva Hugas
  8. 8. A VOLCANO IS AN OPENINGIN THE SURFACE OF THEEARTH THROUGH WHICH VERYHOT MATERIAL (MAGMA)COMES OUT.MAGMA RISES THROUGH APIPE AND IT COMES OUTTHROUGH A CRATER.WHEN MAGMA COMES OUT OFA VOLCANO, IT IS CALLEDLAVA.WHEN A VOLCANO ERUPTS ITALSO EJECTS ASH AND GASES.VOLCANINC ERUPTIONS UNDERTHE SEA CAN FORM ISLANDS,SUCH AS THE CANARYISLANDS. by Eva Hugas

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