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Earth's Dynamic syst
| Term | Definition |
|---|---|
| Crater | A bowl like hole that forms when rock explodes from a volcano during an eruption |
| Earthquake | Vibrations within earth caused by the sudden release of energy, usually as a result of the movement of rocks along a fault |
| Geyser | A rare hot spring that periodically erupts columns of hot water and steam, formed by underground water heated by magma, trapped by a unique plumbing system, and released as pressure builds |
| Hot spring | a spring of naturally hot water, typically heated by subterranean volcanic activity. |
| Volcano | A land-form, usually cone-shaped, produced by a collection of erupted material around a vent, or opening on the surface of earth and through which gas and erupted material pass |
| Fossil | preserved remains of an organism, usually from prehistoric times |