Metamorphic Rock DRW
Name _______________________________________
Date________________________ Class___________
Lesson: Metamorphic Rock
Chapter 4
Section 4: Metamorphic Rock (pg. 95)
1. Metamorphic rock can form from other metamorphic rock. T or F
Origins of Metamorphic Rock (pg. 95)
2. A rock can undergo metamorphism when its surroundings
__________________.
3. At a depth of 16 km inside the Earth, the pressure is ______________________
than the pressure at 2 km.
4. Why doesn’t metamorphism occur at temperatures greater than about
1000C?
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5. Contact metamorphism occurs when rock come in contact with magma.
T or F
6. How does regional metamorphism occur? (circle all that apply)
a. Pressure build up in rock that is deeply buried under other rock
b. Large pieces of the Earth’s crust collide with each other.
c. Rock contact magma.
d. Igneous intrusions “cook” the surrounding rock.
Composition of Metamorphic Rock (pg.97)
7. What happens to the minerals in rock when metamorphism occurs?
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8. Garnet, shown in Figure 26 on page 97, is formed when heat and pressure
cause the minerals ______________________________, _____________________
and _____________________________ to combine and recrystallize.
9. Look at Figure 27 on page 97. Suppose that a geologist finds the
metamorphic mineral chlorite. At what depth did the mineral form?
a. 4-32 km
b. 25-60 km
c. 5-34 km
d. 30-70 km
Textures of Metamorphic Rock (pg. 98)
10. A foliated rock has ________________________________ grains.
11. What do all the rocks shown in Figure 28, on page 98, have in common?
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12. Which of the following are nonfoliated metamorphic rocks?
a. Marble
b. Gneiss
c. Quartzite
d. sandstone