science vocab 24 words

123456789101112131415161718192021222324
Across
  1. 4. The point on Earths surface directly above an earthquakes starting point, or focus
  2. 7. A break in a body of rock along which one block moves relative to another
  3. 11. The theory that Earth's outer layer is made up of large, moving pieces called tectonic plates; the theory explains how processes such as earthquakes and mountain building
  4. 13. The process by which Earth's magnetic north pole and magnetic south pole switch positions periodically; a change in the direction in which Earth's magnetic field points
  5. 16. Any movement of matter that results from differences in density; may be vertical, circular, or cyclical
  6. 19. The hypothesis that a single large landmass broke up into smaller landmasses to form continents
  7. 21. The boundary between two tectonic plates that are moving away from each other
  8. 22. The soft layer of the mantle on which the tectonic plates move
  9. 23. The layer of rock between the Earth's crust and core
  10. 24. The process by which new oceanic lithosphere forms when magma rises to Earth's surface at mid-ocean ridges and solidifies, as older, existing sea floor moves away from the ridge
Down
  1. 1. The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
  2. 2. The strong, lower part of the mantle between the asthenosphere and the outer core
  3. 3. The bending, tilting, and breaking of the Earth's crust; the change in shape of rock in response to stress
  4. 5. A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
  5. 6. A movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move
  6. 8. The edge between two or more plates classified as divergent, convergent, or transform by the movement taking place between the plates
  7. 9. The location within Earth along a fault at which the first motion of an earthquake appears
  8. 10. The sudden return of elastically deformed rock to its undeformed shape
  9. 12. The boundary between tectonic plates that are sliding past each other horizontally
  10. 14. The boundary between tectonic plates that are colliding
  11. 15. The process by which one lithosphere plate moved beneath another plate as a result of tectonic forces
  12. 17. The thin and solid outermost layer of Earth
  13. 18. a system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
  14. 20. The central part of Earth below the mantle