grade eight science terms
Terms
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- CEMENTATION
- A process in which minerals act like cement to hold sediments together.
- CHEMICAL ROCKS
- Sedimentary rocks made up of chemical sediment.
- CLASTIC ROCKS
- Sedimentary rocks that form from pieces of other rocks.
- CONCRETIONS
- A ball shaped rock.
- EXTRUSIVE ROCKS
- Igneous rocks that form from lava.
- FELSITE
- A light colored igneous rock with crystals that cannot be seen with the naked eye.
- FOLIATED ROCKS
- Metamorphic rocks that have minerals arranged in bands or that are made up of layers.
- GEODE
- A hollow rock with mineral crystals lining the inside surface.
- IGNEOUS ROCKS
- Rocks formed from molten rock material that cools and hardens.
- METAMORPHIC ROCKS
- Rocks that have been changed by heat or pressure.
- ORGANIC ROCKS
- Sedimnetary rocks made up of the remains of living things.
- ORGANIC SEDIMENTS
- Sediments made up of the remains of living things.
- PORPHYRY
- An igneous rock with both large and small mineral crystals.
- ROCK CYCLE
- The process of change that shows how the different types of rock are related and how rock material is used.
- SEDIMENTARY ROCKS
- Rocks formed from sediment.