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Earthquakes

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  • Wave that causes most of the damage?
    L - Waves
  • Scale that measures intensity
    Mercalli Scale
  • Means harbor waves
    tsunami
  • What causes Earthquakes?
    Vibrations or seismic waves in the Earth
  • The location on the surface of the Earth where an earthquake took place
    Epicenter
  • What force has a side-slipping of one slab past another slab?
    Shear force
  • Mild shakings before the major one
    Foreshocks
  • Slowest of all the waves
    L - Wave
  • Waves that begin at focus and travel outwards in all directions
    seismic waves
  • The location where the energy of the earthquake is released
    Focus
  • What produces a tidal wave?
    moon
  • Waves that travel through solids and liquids
    P - Waves
  • How to tell how far the epicenter is from the seismograph?
    Distance between the arrival times of the p-waves and the s-waves
  • Faults that result in vertical change?
    Normal and Reverse
  • Wave that is the fastest and thus hitting the surface first
    P - Waves
  • Compare height of tsunami with the depth of the ocean
    Height increases as depth decreases
  • Waves that travel through solids only?
    S - Waves
  • Fault that results in horizontal change?
    Strike-slip Fault
  • Evidence that the Earth has a molten core
    Magnetic field
  • Adjustments of the crust after an earthquake
    Aftershocks
  • What type of force is a stretching or pulling force?
    tension force
  • Cracks on the crust where rocks slide
    faults
  • Measures the strength of larger earthquakes
    Moment magnitude scale
  • Tool that measures earthquake waves
    Seismograph
  • Fault caused by compression force
    Reverse fault
  • Travels through the crust on the Earth's surface?
    L - Waves
  • Fault caused by shear force
    Strike-slip Fault
  • What produces a tsunami?
    earthquake under the sea
  • Measures the effects of an earthquake
    Intensity
  • What type of force is a pushing together?
    compression force
  • Has a boundary between crust and mantle.
    Moho Discontinuity
  • Measures the strength of the earthquake
    Magnitude
  • Area between 105-140 where not seismic waves can go?
    Shadow zone
  • Compare speed of tsunami with the depth of ocean
    Speed fast in deeper depth and slows down as the depth decreases
  • Fault caused by tension force
    Normal fault
  • Triangulation of 3 seismographs finds what?
    Epicenter
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