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Grade 8 Rocks and Minerals

Mrs. Weimer

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Across
1.when rock slides into the crust and is formed from heat and pressure
5.rock type that most fossils are found in
6.melted rock underground
8.when dissolved minerals crystallize and then glue together
9.metamorphic rocks that have grains in parallel layers
13.the grain type of igneous rock that forms when the cooling rate is fast
14.erosion on a mountain range will lead to this kind of rock
16.type of sedimentary rock that forms from compaction and cementation of dissolved solids from a solution (Limestone)
17.type of sedimentary rock that forms from compaction and cementation of plants and animals (Coal)
20.igneous rock that forms very quickly on the earth's surface will have a texture that is very___(starts with s-think of obsidian)
21.how a mineral reflects light
23.the most abundant intrusive igneous rock (continental crust)
Down
2.minerals can form deep in the earth's crust by ___of melted minerals (starts with c)
3.the repeating pattern of a mineral's particles form...(starts with c)
4.hardest known mineral
7.the process that one rock transforms into another
8.the most noneffective way to identify a mineral
10.igneous rock that formed after lava erupted onto the earths surface is called
11.type of sedimentary rock that form from compaction and cementation of sediment (Breccia)
12.not organic, makes up rocks
15.hardest mineral on the hardness scale
18.the grain type of igneous rock that forms when the cooling rate is slow
19.melted rock above ground
22.the color of a mineral in powdered form
24.softest mineral on the hardness scale

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