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science for sixth graders

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is the softest mineral?   Talc  
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What is the Hardest mineral that can scratch a steel file?   Diamond  
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How many known minerals are there?   4000  
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Can minerals be man-made?   no  
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Can minerals be made from once living things?   No  
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What are the three main types of rocks?   Igneous, Sedimentary, and Metamorphic  
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What gives a rock it's texture?   Grains  
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What three characteristics do geologists use to determine the rock?   Color, Texture, and Mineral Composition  
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How do igneous rocks form?   When molten material cools and hardens  
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If a mineral has high silica content, what color is it?   The color would be light  
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What is the difference between extrusive and intrusive rock?   Extrusive Rock- rock formed from lava that flowed out of a vent onto Earth's surface Intrusive Rock- rock formed from magma that hardened within Earth's interior  
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Two ways minerals form   When molten rock cools and when water that has atoms dissolve elements in it, evaporate away. Solids are left behind and crystalize.  
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how does igneous rock form?   Forms when magma cools  
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how does sedimentary rock form?   When particles of rocks, plants, and animals are cemented together  
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How does metamorphic rock form?    
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What are five characteristics to tell if a rock is a mineral?   Naturally Solid Crystal Structure unique composition and inorganic (cant be made from something once living  
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If you can see the grains easily on a rock, what type of grains does it have?   Coarse  
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If you cannot see the grains easily on a rock, what type of grains does it have?   Fine  
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Created by: ruby.mccook
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