Crossword puzzle

2. Molten rock that has reached earth's surface
5. rock material formed by a volcanic explosion
8. Formed from alternating layers of lava flows and ash or cinders
10. A smaller earthquake following the main shock of a large earthquake
11. A location where mantle plume rises to the surface to form a volcano
13. The layer of rock that lies between the outer crust and the core of the earth
16. When two tectonic plates past each other horizontally
17. When two tectonic plates release stress
18. Measure of the fluidity of a substance
19. Two plates moving against each other

1. Molten rock that is underneath earth's surface
3. A place where gas, Ash or melted rock come out of the ground
4. The outer solid part of the Earth, including the crust and uppermost mantle
6. a large underground pool of molten rock found beneath the surface of the Earth
7. Two plates separating from each other
8. A scientific instrument that detects and records vibrations produced by earthquakes
9. Lies beneath the lithosphere
12. Broad based with gentle slopes
14. Small with steep sides Formed from eruptions of only pyroclastic
15. the outermost layer of earth
20. The opening of a volcano where lava erupts from