Science 6 Ch. 1

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Across
  1. 2. The idea that the earth's crust is made up of moving plates is called the theory of plate _________
  2. 4. _________ happen when the rocks along the plate boundaries shift suddenly and release their stored energy
  3. 6. An earthquake, volcano, or landslide occurring under or near the ocean can cause a series of giant waves called ________
  4. 7. The part of the earth is made up of the crust and the upper area of the mantle
  5. 9. ________ waves flow out from the focus in all directions, similar to the ripples caused when a pebble is tossed into a pond
Down
  1. 1. Waves of energy are send out from the ________, or beginning point of the earthquake under the surface
  2. 3. Scientists who study the movement of the earth are called _____
  3. 5. Scientists believe that _________ was a single large landmass on the earth at one time
  4. 8. A _______ is the machine used to detect, time, and measure the movements of the earth
  5. 10. Volcanoes produce _____ rocks as magma and lava cool and harden