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Rocks & Minerals
Chapter 4.1 Rock: Mineral Mixtures
Question | Answer |
---|---|
Rock | Naturally occurring solid mixtue of one or more minerals or organic matter. |
Rock Cycle | The series of processes in which a rock forms, changes from one type to another, is destroyed, and forms again by geological processes. |
Process that shape the Earth | Weathering, Erosion, Deposition, and Heat and Pressure. |
Weathering | Process in which water, wind, ice and heat break down rocks creating sediment. |
What determines the texture of a rock? | The amount of heat (temperature),the rate at which the rock cools (cooling rate, and the amount of pressure the rock undergoes. |
Erosion | Process by which sedminet is removed from its source. |
Deposition | The process in which the eroded material is laid down. |
Heat & Pressure | Heat from the Earth and pressure from large layers of rock can change the shape and texture of a rock. |
Uplift | Movement within the Earth that causes rock inside the Earth to be moved to the Earth's surface. |
How are rocks classified? | By their composition and texture. |
Composition | The chemical (amount of minerals and/or organic material) make-up of a rock. |
Texture | The quality of a rock that is based on the sizes, shapes, and position of the rock's grains. |