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Rocks and Minerals
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What is a mineral?
a solid, nonliving material found in nature
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Which property of minerals is measured by scratching the surface of the minerals?
hardness
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A rock that is formed when lava cools is called what type of rock?
Igneous
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How does sedimentary rock form?
Pieces of rock and other materials squeeze together.
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Is magnetism a property that can be seen? Without touching the rock?
No
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Emily finds a fossil in a rock. The fossil will help her determine the rocks...
Age
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Ana finds a rock that contains a fossil. Which type of rock does Ana most likely have?
Sedimentary
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A rock was placed under heat and pressure so that its properties changed. It is now a new type of rock. What type of rock is the new rock?
metamorphic
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Rocks are mostly made of...
Minerals
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Slate is a dark gray metamorphic rock. Which statement best describes how slate forms?
heat and pressure turned a sedimentary rock into slate.
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Donna is trying to identify a mineral. She notes that the mineral can easily break into flat sections. What property has she observed?
cleavage
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How can the streak of a mineral be tested?
rub it across a tile to see the color of the powder it leaves.
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How are coal, sandstone and granite similar?
They are all rocks.
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Which process would for an igneous rock?
Melted rock cools and then hardens
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