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Ch8 Scott Foresman Word Scramble

 
 


 

 
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Question Answer
mineralnatural, nonliving solid crystal that makes up rocks
lusterthe way a mineral's surface reflects light
Why is the streak test useful?Mineral colors vary, but a mineral's streak is always the same color
sedimentary rockrock that forms when sediments are cemented together and harden
How do freezing and thawing weaken rocks?Freezing and thawing water causes weathering by making the cracks larger.
igneous rockrock that forms from molten rock
What happens when igneous rocks cool very slowly?large crystals form - granite
What happens when igneous rocks cool very quickly?no time to form crystals - pumice, basalt, obsidian
sedimentan earth material that has been moved from one place to another and layed down onthe surface of the earth
fossilremains or marks of a living thing from long ago
metamorphic rock rock that has changed as a result of heating and pressure
what happens when heat or pressure is applied to sedimentary or igneous rockit becomes metamorphic rock
weatheringa gradual wearing away or changing of rock and soil caused by water, ice, temperature changes, wind, chemicals or living things.
erosionthe movng of pieces of soil or rock by mechanisms including gravity, wind, water, ice or plants or animals.