| A | B |
| earthquake | A shaking of the ground |
| sphere | A round object like a ball or globe |
| mantle | Part of the interior of a planet that lies beneath the crust and above the central core |
| gel | A thick substance that is like jelly |
| seismograph | An instrument that shows or records when and where an earthquake occurs and how strong it is |
| tsunami | Great sea wave produce by submarine earth movement or volcanic eruption |
| faults | Fracture in the crust of a planet accompanied by a displacement of one side with respect to the other |
| pressure | The force of one thing pressing on another thing that is touching it |
| severe destruction | To ruin the structure or condition of to a great degree |
| altered | To make different, change |
| substantial | Large or considerable in amount |
| unpredictable | Not behaving in a way that is expected |
| available | Ready to serve or be used |
| flexible | Capable of being bent without breaking |
| collapse | To fall down, cave in |
| survive | To live through |
| plates | Large movablesegments into which the earth's litosphere is divided according to the theory of plate tectonic |
| magnitude | Condition of being great in size or extend |
| unprepared | Not prepared; not ready |
| debris | The remains of something broken down or destroyed |