Inside Earth

3. measure of energy released during an earthquake
6. large opening formed when top of volcano collapses
9. fossil that forms when crystals fill a mold and harden
10. surface where rocks move when they pass their elastic limit and break
11. plastic-like layer of earth where lithospheric plates float around
14. instrument used to register earthquakes
18. in an earthquake, point below earth's surface where energy is released as seismic waves
19. point of earths surface above an earthquakes focus
20. igneous rock that is formed when magma is squeezed into a vertical crack

1. type of fossil that forms in rock when an organism with hard parts decays
2. plates moving away from each other
4. vibrations that are produced when rock breaks along a fault
5. opening in earth's surface that erupts ash and lava at hot spots
7. In geology, its the outer solid shell of a rocky planet
8. rigid layer of earth made of the crust and part of upper mantle
12. remains of once living organisms
13. large, ancient landmass that is composed of all continents joined together
15. solid bulk of earth's interior
16. large section of earth's continental crust and upper mantle that moves around the atmosphere
17. depression around a volcano's vent