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ROCK CYCLE QUIZ ANSWERS


1. What are the 3 types of rocks? sedimentary, metamorphic, igneous
2. What type of rock is formed by heat and pressure? metamorphic
3. What type of rock is formed by volcanic activity? igneous
4. What type of rock is formed by weathering and erosion? sedimentary
5. What is melted rock called? magma, lava
6. When igneous rock is weathered and eroded, what type of
rock does it become?
sedimentary
7. When metamorphic rock becomes weathered and eroded,
what type of rock does it become?
sedimentary
8. When sedimentary rock melts, what does it become? magma
9. When magma cools, what type of rock does it become? igneous
10. In order for metamorphic rock to become igneous rock,
what must happen?
melt, then cool
11. What type of rock do you think is at a subduction zone
(convergent boundary)?
metamorphic, under a lot of heat and pressure
12. What does metamorphic rock turn into at subduction zones
(convergent boundaries)?
magma
13. Jesse found some old rocks in in his basement.
They had large crystals and were labeled "continental crust."
What type of rocks were they?
igneous
14. Foliated and nonfoliated refers to which type of rock?? metamorphic
15. Rock that are made of sand layers are what type? sedimentary
16. Rock that cools below the Earth's surface is what type? intrusive igneous rock
17. Rock that cools on top of the Earth's surface is what type? extrusive igneous
18. The mid-ocean ridge is a divergent boundary where lava erupts
onto the ocean floor. Is this intrusive or extrusive igneous rock?
extrusive igneous
19. Granite, a type of igneous rock is formed under the Earth's
surface and uplifted by Earth processes. Is granite intrusive or
extrusive igneous rock?
intrusive igneous
20. Many folded mountain ranges are formed under extreme
pressure. What type of rock might be found here?
metamorphic rock
21. Rock that made of other rocks and fossils are called? sedimentary
22. In order for ANY rock to become igneous rock,
what must happen first?
melt, then cool
23. Obsidian is a glassy type of rock with a smooth texture.
What type of rock is this?
igneous
24. Rocks formed by cementation are in what category of rocks?? sedimentary
25. "E.D.C.C." is an acronym for which type of rock? sedimentary
26. What does "E.D.C.C." stand for? erosion, deposition, compaction, cementation
27. Any rock can undergo any process to become any rock.
How does an igneous rock become another igneous rock?
melt, then cool
28. Which rocks are described as having crystals, glass, or holes? igneous
29. All rocks are made of one or more ____________________ ? minerals
30. Volcanoes ooze a liquid rock material called ________________? lava
 
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