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Dynamic Earth

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  • How do we know that the continents were once connected?
    Fossils, soils, rock types, etc.
  • Which layer of the Earth is the thinnest?
    The Crust
  • Which scientist presented the theory of Continental Drift?
    Alfred Wegener
  • What is the name for the tectonic plates that have lots of water on them?
    Oceanic Plates
  • What is the name for the tectonic plates that have lots of land on them?
    Continental Plates
  • Which layer of the Earth contains molten and semi-molten rock?
    The Mantle
  • What was the name of the supercontinent?
    Pangaea
  • How hot is the Inner Core of the Earth?
    6000 degrees centigrade
  • What is the name of the theory that argues that the continents are moving?
    Continental Drift
  • What is the name for the melted rock found within the Earth's mantle?
    Magma
  • Which layer of the Earth consists of liquid nickel and iron?
    The Outer Core
  • What layer is this?
    Inner Core
  • What is the name of the currents that cause the plates to move?
    Convection Currents
  • What layer is this?
    Crust
  • What layer is this?
    Mantle
  • Describe how Convection Currents work
    Hot magma rises, nears the surface and cools, falls back down, creates a circular motion
  • Name the four layers of the Earth
    Crust, Mantle, Inner Core, Outer Core
  • Which layer of the Earth is the hottest?
    The Inner Core
  • What is the name for the place where two plates meet?
    Plate boundary
  • What layer is this?
    Outer Core