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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 hot spring in which water intermittently boils, sending a tall column of water and steam into the air. |
| hot spring | a spring of naturally hot water, typically heated by subterranean volcanic activity. |
| volcano | a landform, 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 |