Vocabulary Review Project 2

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Across
  1. 2. Year The distance that light travels in a vacuum in one year, equal to about 9.46 trillion km
  2. 3. the external force acting on an object or surface parallel to the slope or plane in which it lies
  3. 5. Spot A place deep within the Earth where hot magma rises to just underneath the surface, creating a bulge and volcanic activity
  4. 6. 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.
  5. 8. region in a longitudinal wave where the particles are closest together.
  6. 11. Tectonic Theory the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle
  7. 12. Drift Theory continents are not stationary, but move across the Earth's surface.Continental drift is one feature of the modern theory of plate tectonics.
  8. 14. a crack in the Earth's crust.
  9. 15. The location where the earthquake begins.
Down
  1. 1. a small group of atoms or molecules
  2. 4. Unit a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun.
  3. 7. the point on the earth's surface vertically above the focus of an earthquake.
  4. 9. included all the present continents, which broke up and drifted apart.
  5. 10. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
  6. 13. The partial pressure of a gas, especially dissolved in a liquid