Volcanoes and Earthquakes

3. This occurs when matter such as magma circulates within Earth.
4. A natural disaster that is described as a sudden, violent shifting of massive plates underneath Earth's surface.
6. Areas or columns where heat or rocks in the mantle are rising toward the Earth's surface.
11. It is the point within the Earth along the geological faults where the earthquake originates.
14. A mountain that opens downward to a reservoir of molten rocks.
18. These are earthquakes that occur after a volcanic eruption.
19. These are controlled by the geological processes that formed them and act on them even after they have formed.
22. The study of earthquakes and seismic waves.
24. These are small earthquakes that is located underground and in mines that are caused by the disintegration of the roof of the mine or cavern of by massive land sliding.

1. A Canadian geophysicist and of the founders of the theory of plate tectonics.
2. It is a fault where the hanging wall moves downward.
5. The most common type of earthquake.
7. A line which may be visible or not that occurs on the Earth's surface
8. This refers to the processes and phenomena associated with the surficial discharge of molten rocks.
9. It is the point on the Earth's surface directly above the hypocenter.
10. These are locations on the Earth's surface that has experienced active volcanic activities for a long period of time.
12. It is a fault in which two blocks of crusts slide past each other on the same plane.
13. It is a block of crust below the fault.
15. A block of crust above the fault.
16. It is an earthquake that results from the detonation of chemicals or nuclear devices.
17. This is the area where the fault occurs.
20. It is a crack across which the rocks have been offset first.
21. It is the roughness or harshness along the fault.
23. It is a fault in which the hanging wall moves upward.