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5th Earthquates
5th Grade Science - Earthquakes and Volcanoes
Term | Definition |
---|---|
Lithosphere | Covers Earth in a thin shell, not a solid sheet of material |
Techtonic Plates | Pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere. |
Plates | Edges called boundaries, move into each other and pull apart |
Locked | Plates get --- as they move, then 'jerk' into a new position |
Vibrations | Plate slipping and sudden movement cause |
Quakes and Volcanoes | One process of changing the Earth's surface |
Earthquakes | This happens at faults; cracks in the crust usually along plate boundaries |
Volcanoes | These form near colliding plate boundaries on land or ocean floor |
Magma | partially melted rock underground |
Lava | Magma forced to the surface |