Geography

• What are the different layers of the earth?


  crust, mantle, outer core, inner core
• Conservative plate; direction of plates moving , what's happening, hazards/landforms found, real life examples


  Along side eachother, no crust created or destroyed often causes earthquakes, earthquakes, San Andrea faut
• Collision plate; direction of plates moving , what's happening, hazards/landforms found, real life examples


  Into eachother, 2 continental plates move together , crumpling and folding causes mountains and earthquakes, fold mountains and earthquakes, Eurasion and indo Australian
• Constructive plate;direction of plates moving , what's happening, hazards/landforms found, real life examples


  Apart, plates move apart them magma rises from mantle and erupt on surface of earth as a volcano when is cools its forms new crust , gentel sided volcano and small earthquake and mid ocean ridge , North America and eurasion plates
• Destructive plate; direction of plates moving , what's happening, hazards/landforms found, real life examples


  Over and under, the heavier oceanic plate sinks under the lighter continental plate the friction causes earthquakes the continental melts and makes volcanoes , fold mountains and earthquakes and ocean trench and volcanoes , Mazda plate and South America
• Why are the plates moving all the time?


  Convection currents
• Hold old is the earth ?

  4.5 billion years old
• Lava


  Liquid rock that flows down the side of a volcano , destroys crops and buries towns and villages
• Ash


  Solidified lava that’s been exploded out of the volcano , gets in eyes , hair and lungs and can suffocate you and can collapse roofs
• Lahar (mudflow)


  A river of hot mud formed from ash mixing with water , travels up to 100km per hour , they sweep everything along with it , you can drown in mud
• Parts of the volcano 


  Magma chamber, magma , main vent , secondary vent , secondary cones , crater , volcanic bombs
• Hazards of a volcanos

  Ash , Lahar, lava
• What’s a natural hazards


  A hazard that’s not man made and that can harm a person or a thing
• The 3 types of volcanoes 


  Active , dormant , extinct