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Earth's dynamic syst
| Term | Definition |
|---|---|
| crater | a bowl like hole that forms when a rock explodes from a volcano during an eruption |
| earthquake | vibrations within earth caused by sudden release of energy as a result of a movement of rocks along a fault |
| geyser | a hot spring which water imminently boils sending up a tall column of water |
| hot spring | a spring of naturally hot water typically heated by a volcano |
| volcano | a mountain or hill with a crater or vent which lava and molten rock fragments, hot vapor and gas are being or have been erupted |
| fossil | the remains of a pre historic creature formed as a mold or a cast in a rock |