Tsunami

5. The action of one plate sliding underneath another to cause an earthquake
7. The vertical height a tsunami wave reaches above a reference sea level
8. An area where one plate is being pushed beneath another plate
10. An area that surrounds the Pacific Ocean and is high in seismic and volcanic activity
11. A wave with a steep vertical front
12. The energy release of an earthquake
14. The distance between two waves
16. The demarcation line between the inundation area and the safe zone
19. Time required for the first tsunami wave to travel from its source to a given point
20. When the ocean recedes from land before a tsunami strikes

1. The number of times a wave is produced within a certain time period
2. The amount of time between two specific and successive waves
3. Dry land area that has been flooded by a tsunami
4. A waves lowest point
6. An underwater landslide
8. An area that should not be reached by the water from a tsunami
9. The portion of the ocean floor closest to land
13. An earthquake capable of generating a tsunami
15. A waves highest point
17. A tsunami wave is sometimes incorrectly called a ___
18. Piece of equipment records the motion of the ground during an earthquake