Across
- 4. people who try to predict earthquakes
- 6. a_________ is caused by an undersea earthquake or cyclone
- 7. a instrument used to detect earthquakes
- 8. a volcano that has not erupted in recent years but may in the future are called __________
Down
- 1. hot lava, ash escape from the __________ of the volcano
- 2. an opening on the earth's surface which allows lava to escape
- 3. earthquakes are measured on the _________
- 5. a sudden shaking of the ground