Across
- 2. the California earthquake of April 18, 1906 ranks as one of the most significant earthquakes of all time
- 4. the result of a sudden release of stored energy in the Earth's crust that creates seismic waves
- 6. giant waves caused by earthquakes or volcanic eruptions under the sea
- 7. a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur
Down
- 1. one of Indonesia's 100-plus active volcanoes. Its eruptions in 1815 rocked the world with after-effects.it caused disease and harmed the growth of crops in the surrounding regions, and caused climate changes as far away as North America. it killed over 90,000 people.
- 3. a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere
- 5. German meteorologist and geophysicist who formulated the first complete statement of the continental drift theory