List 25

1. a gigantic wave of seawater caused by an earthquake in oceanic crust
3. to cause something to start or happen
5. a smaller, weaker earthquake that often follows a main earthquake event
8. a column of magma that rises from the mantle into a chamber beneath Earth’s crust
10. an instrument used to track seismic waves traveling through the earth
14. happening by chance
16. a very hot region deep within Earth’s mantle where a huge magma chamber forms
17. to cause a force to be felt or have an effect

2. an earthquake’s strength
4. a bowl-shaped opening at the top of a volcano or geyser
6. not permanent
7. a process in which a heavier oceanic plate slides under a lighter continental plate
9. in an easy manner; with ease; without trouble
11. heavy, dense rock formed from cooled, hardened lava
12. melted rock in Earth’s mantle
13. to move forward quickly, suddenly, and with force
15. to move downward