SUPER HERO

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Across
  1. 3. the layer of Earth made up of the crust and uppermost mantle and ranging in thickness from 65km to100km
  2. 4. Earth's outermost layer formed by lighter materials,such as silicon and oxygen,floating to the top during Earth's early cooling period
  3. 5. molten rock beneath Earth's surface
  4. 6. the study of earthquakes and seismic waves
  5. 8. a partly molten layer in Earth's upper mantle just below the lithosphere
  6. 10. the study of the magnetic properties of ancient rocks
  7. 14. in geology,the location inside Earth where an earthquake starts
  8. 15. Earth's thickest layer,lying just below the crust and making up 70 percent of Earth's volume
Down
  1. 1. an opening in Earth's surface that,when active,spews out gases,chunks of rock,and melted rock
  2. 2. devices that measure the amount of ground motion caused by an earthquake;also called seismographs
  3. 7. the extent of ancient glaciers;also the rock markings they left behind
  4. 9. large breaks in rock layers
  5. 11. the point on Earth's surface directly above the focus where an earthquake starts
  6. 12. a number that rates the strength of an earthquake
  7. 13. a record of ground motion