Rocks
Terms
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- mineral
- a solid formed in nature with a definite chemical makeup and a crystal structure
- weathering
- the process that crumbles, cracks, and breaks rocks (slow change by wind and water)
- metamorphic rock
- forms when rocks have been changed through squeezing and heating
- texture
- the size, shape, and arrangement of mineral grains, or crystals in a rock
- rock cycle
- sequence of events in which rocks are formed, destroyed, altered, and reformed by geological processes
- composition
- minerals a rock is made of determine this.
- sedimentary rock
- Rock formed when layers of sediments harden over millions of years.
- erosion
- (geology) the mechanical process of wearing or grinding something down (as by particles washing over it)
- depositon
- process in which water, ice, wind, and gravity drop newly formed sediments
- igneous rock
- formed when melted rock cools and hardens
- rock
- a physical combination of one or more minerals