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Review assignement15

TermDefinition
Crust The outer most layer of the earth, which contains all of Earth's surface features.
Bedrock The unbroken, solid rock portion of Earth's crust.
Outcrop Bedrock that has become exposed at the Earth's surface.
Soil A mixture of small rock fragments and decayed organic material that covers much of the earth's land surface.
Organic Matter Materials produced by living things, such as decaying leaves and animal waste.
Minerals A natural occurring, solid inorganic(nonliving) substance with characteristics physical and chemical properties.
Physical Properties A characteristic that enables an organism to survive under a given set of conditions.
Streak color The color of the powder form of the mineral.
Hardness A minerals resistance to being scratched.
Moh's scale of Hardness A scale that measures a minerals resistance to scratches.
Luster How a mineral looks when reflecting light.
Cleavage A mineral's tendency to break along smooth, flat surfaces.
Color Not a reliable guide to a mineral's identity
Chemical Properties How a mineral reacts to acid.
Igneous Rock A rock formed by the cooling and hardening of hot, liquid material.
Magma Melted rock material under the earth's surface
Lava Melted rock material on the earth's surface.
Sedimentary Rocks A rock formed from layers of particles, called sediments, that are cemented together under pressure.
Metamorphic Rocks A rock produced when existing igneous or sedimentary rock undergoes a change in from caused by great heat, pressure, or both.
Rock Cycle The cycle where any rock can be transformed into a new type of rock by a natural process.
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