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Science Earthquakes and Volcanos

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  • Mud and rock fragments that surge down the mountain when part of the volcano collapses form a....
    debris flow
  • What type of fault occurs when rocks move apart, forming a gap?
    Normal fault
  • A large volcano that seems to be layered, but presently inactive is a __________
    dormant composite cone volcano
  • What is the point on the earth's surface directly above the focus of an earthquake called?
    Epicenter
  • What scale do we use to measure the magnitude of an earthquake?
    Richter Scale
  • Vibrations of energy that flow from the focus of an earthquake are called...
    Seismic waves
  • The beginning point of an earthquake is called ...
    The Focus
  • Which are the lower destructive waves that occur on the surface of the earth?
    Surface Waves
  • The area around the Pacific Ocean where many volcanoes occur is called the Ring of Fire
    True
  • The strength of the seismic waves of an earthquake is called...
    The magnitude
  • A volcano with a bowl-like crater at its top and only one vent is called...
    active cinder cone volcano
  • What killed the people in Pompeii?
    A pyroclastic flow
  • What is a pyroclastic flow?
    An avalanche-like emission of red-hot dust and gases from a volcanic eruption.
  • True or False: The lithosphere is located beneath the mantle of the earth.
    False
  • Breaks in the earth's surface along which rocks can move are called...
    Faults
  • What type of fault occurs when rocks push together, forcing a section of rocks upward?
    Thrust, or reverse fault
  • True or False: Hot springs occur in places when water is heated by hot magma
    True
  • True or False: The theory of plate tectonics explains that the earth's crust is made up of moving plates.
    True
  • Fast moving waves that occur n=beneath the surface of the earth are called...
    Body waves
  • True or False: Volcanic fog is called smog
    True
  • What type of fault occurs when rocks move horizontally past each other?
    Strike-slip fault
  • we use this device to detect, time, and measure the movements of the earth.
    Seismograph
  • Magma that breaks through the earth's surface is called...
    Lava
  • A _______________ is a large, gradually sloping volcano that has mild eruptions and a continuous flow of lava.
    Active Shield Volcano
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