Plate tectonics Basic (KS3)

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Plate tectonics Basic (KS3)

  1. 1. What are plate tectonics and how do they influence volcanoes and earthquakes ?
  2. 2. <ul><li>By the end of today's lesson you should be able to: </li></ul><ul><li>1. Describe the Structure of the Earth and name the four main layers of the Earth. </li></ul><ul><li>2. Explain what tectonic plates are and be confident with naming examples. </li></ul>What are plate tectonics and how do they influence volcanoes and earthquakes ?
  3. 3. Key Terms <ul><li>Tectonic </li></ul><ul><li>The Earth’s Crust </li></ul><ul><li>Mantle </li></ul><ul><li>Core </li></ul><ul><li>The geological study of the Earth’s structure . </li></ul><ul><li>The outer layer of the Earth consisting of solidified rocky plates. </li></ul><ul><li>The layer of molten rock which the crust floats on top of. </li></ul><ul><li>The centre of the Earth is very hot, and made of metal. </li></ul>
  4. 4. THE EARTHS STRUCTURE <ul><li>CAN YOU THINK WHAT THIS IMAGE HAS TO DO WITH THE EARTHS STRUCTURE? </li></ul><ul><li>YOU HAVE ONE MINUTE TO SEE IF YOU CAN COME UP WITH AN ANSWER </li></ul>
  5. 5. THE EARTHS STRUCTURE <ul><li>ALTHOUGH IT MAY SOUND STRANGE A GOOD WAY AT UNDERSTANDING THE STRUCTURE OF THE EARTH IS TO THINK OF IT AS AN EGG. </li></ul><ul><li>THE THIN SHELL IS THE ‘CRUST’ </li></ul><ul><li>THE WHITE SOFT PART IS THE ‘ MANTLE’. </li></ul><ul><li>THE YELLOW YOLK IS KNOWN AS THE ‘CORE </li></ul>
  6. 6. Earth’s Crust Mantle Outer Core Tectonic Plates Inner Core Understanding Earth's &quot;Layers&quot; Earth is made of several distinct layers similar to an egg:
  7. 7. The Crust….. <ul><li>The outermost layer of our planet is the crust, which comprises the continents and ocean basins . </li></ul><ul><li>The Earth's crust varies in thickness from 35 to 70 kilometres in the continents and 5 to 10 kilometres in the ocean basins. </li></ul>Oceanic plates Continental plates
  8. 8. And the Earth is made up of a series of these plates… Add these labels to you own maps
  9. 9. The Mantle… <ul><li>Next comes the mantle. It is solid and is separated into an upper and lower mantle. </li></ul><ul><li>Most of Earth's internal heat is generated here to move the Earth's tectonic plates. </li></ul>
  10. 10. WHAT DO YOU THINK THE MANTLE IS MADE OF? The mantle is made of a number of molten metals such as iron, magnesium, aluminium and oxygen.
  11. 11. The Core... <ul><li>The Earth's innermost layer is the core, which is separated into a liquid outer core and a solid inner core. </li></ul><ul><li>The outer core is approximately 2,300 kms thick, while the inner core is approximately 1,200 kms. Thick. </li></ul>
  12. 12. <ul><li>WHAT DO YOU THINK THE CORE IS MADE OF? </li></ul><ul><li>The core is mainly made of iron </li></ul><ul><li>WHAT SORT OF TEMPERATURE DO YOU THINK THE CORE IS? </li></ul><ul><li>The core is the hottest part of the Earth approximately 4300°C. </li></ul>
  13. 13. TRUE OR FALSE? <ul><li>THE HOTTEST PART OF THE EARTH IS THE MANTLE </li></ul><ul><li>TECTONIC PLATES ARE OFTEN NAMED AFTER THE CONTINENT THEY SIT ON </li></ul><ul><li>THE INNER CORE IS MADE OF SOLID IRON </li></ul><ul><li>THE MANTLE IS ROUGHLY BETWEEN 5-30km thick </li></ul>

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