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Rock Cycle and Soil
| Term | Definition |
|---|---|
| texture | the size, shape, and position of the grains that make up a rock |
| strata | layers of rock |
| sediments | small grains and fragments of weathered rock |
| metamorphic | type of rock that forms deep in the earth as a result of extreme heat and pressure |
| igneous | rock formed from cool magma |
| extrusive igneous rock | forms when magma cools quickly on the surface |
| intrusive igneous rock | forms when magma cools slowly within in the earth |
| weathering | breakdown of rock into fragments, due to wind, water, ice and heat |
| erosion | the process by which sediment is removed from its source and carried away |
| deposition | the process by which eroded sediment is laid down |
| rock | a naturally occurring solid mixture of minerals and organic matter |
| rock cycle | the slow process by which old rocks are recycled into new ones |
| composition | the chemical make-up of a rock |
| sedimentary | this type of rock forms as deposited sediment becomes compacted and cemented |
| organic | living or alive at one time (plant/animal matter) |
| soil horizon | a layer of soil with properties from layers above and below it |
| soil | mixture of weathered rock, organic matter, water, and air |
| sand | visible without a microscope; gritty; holds little water |
| inorganic | material that was never alive |
| humus | the organic part of soil; forms when dead plants or animals decay |
| silt | not visible without a microscope; powdery when wet, holds more water than sand |
| clay | not visible without a microscope, sticky, holds lots of water |
Created by:
ckerley123