Earthquakes

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Across
  1. 3. surface is the crust.
  2. 4. the part of the earth's surface directly above the starting point of an earthquake
  3. 6. a shaking or trembling of a portion of the earth
Down
  1. 1. tectonics a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.
  2. 2. In physics, a shock wave, or shock, is a type of propagating disturbance that moves faster than the local speed of sound in the medium
  3. 5. strength or energy put forth