Plate Tectonics Vocabulary

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Across
  1. 5. : is the recording of the ground shaking at the specific location of the instrument
  2. 8. :A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
  3. 9. : is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock.
Down
  1. 1. :the rigid outer part of the earth, consisting of the crust and upper mantle.
  2. 2. : are shear waves that deform the ground perpendicular to their direction of travel, are unable to pass through air and liquids such as water and magma, This is how we know Earth's outer core is molten
  3. 3. :the vibration of the rock is in the direction of propagation. They travel the fastest and are the first to arrive from the earthquake.
  4. 4. :they can travel through the interior of a body such as the Earth's inner layers, from the focus of an earthquake to distant points on the surface.
  5. 6. :a wave of acoustic energy that travels through the Earth or another planetary body. It can result from an earthquake, volcanic eruption, magma movement, a large landslide, and a large man-made explosion that produces low-frequency acoustic energy.
  6. 7. :the continent we now know as North America was contiguous with Africa, South America, and Europe
  7. 10. :are earthquakes that precede larger earthquakes in the same location. An earthquake cannot be identified as a foreshock until after a larger earthquake in the same area occurs.