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Earthquakes

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  • A crack in Earth’s crust separating rocks that have moved in different directions.
    Fault
  • Earth’s outer layer.
    Crust
  • A line or object that signals a border.
    Boundary
  • Major fault in California marking the boundary between two tectonic plates.
    San Andreas Fault
  • The area with the most Earthquake's around the Pacific Ocean’s edge.
    Ring of Fire
  • Huge sea waves caused by an underwater earthquake or volcanic eruption.
    Tsunami
  • Measures the intensity based on human experience and damage.
    Mercalli Scale
  • When loose, wet soil behaves like a liquid due to shaking.
    Liquefaction
  • An application of force or group of forces on an object, causing it to change shape.
    Stress
  • The rubbing of one thing against another. You can feel it by rubbing your hands together
    Friction
  • A large piece of Earth’s crust that moves over the mantle.
    Plate
  • The capability of an object or thing to do work. You need it to do everything. The food you eat provides it..
    Energy
  • Measures earthquake magnitude (energy released).
    Richter Scale
  • Smaller quakes following a major earthquake.
    Aftershock
  • A fault where one rock layer is pushed over another, creating vertical movement.
    Thrust fault
  • The underground point where an earthquake starts.
    Focus
  • An instrument that detects and records earthquake waves.
    Seismograph
  • A shaking or vibrating movement in the earth. It is a synonym for earthquake.
    Tremor
  • The amount of energy an earthquake releases.
    Magnitude
  • A fault where rocks slide horizontally past each other.
    Strike-slip fault
  • A sudden shaking of the ground caused by the release of energy in Earth's crust.
    Earthquake
  • The thick layer of hot, dense rock beneath Earth’s crust.
    Mantle
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