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5 Cards in this Set
- Front
- Back
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Define rock and mineral |
Rock: a natural material composed of one or more minerals Mineral: an inorganic, naturally occurring solid material. Can be either elements or compounds |
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What is MOHs hardness scale? Name the hardest mineral and the softest mineral on the scale |
It is a scale that measures hardness of minerals. Softest is talc and hardest is diamond |
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Name the five ways to identify minerals and explain one |
Lustre, colour, streak, cleavage and fracture. Lustre: some minerals appear shiny and some dull |
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Name the three rock families and explain how each is formed. Give examples of each |
Igneous rock forms when hot magma or lava cools and solidifies. Example: obsidian. Sedimentary rock is made by layers of sediment being packed and cemented together. Example: sandstone Metamorphic rock is made below earths surface when extremely high pressure and heat cause the original rock to change form example: marble |
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How does soil form? |
From trapped plants and animals from long ago that press down and combine with rock |
