Download Directed Reading B (Lesson 4-4) Section: Metamorphic Rock

Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
Directed Reading B (Lesson 4-4)
Section: Metamorphic Rock
ORIGINS OF METAMORPHIC ROCK
Circle the letter of the best answer for each question.
1. What process is a rock undergoing when the new environment is different
from the one in which the rock was formed?
a. stratification
b. melting
c. metamorphism
d. deposition
2. What aligns in parallel bands due to added pressure on a rock during
metamorphism?
a. mineral grains
b. sandstone
c. magma
d. fissures
Contact Metamorphism
3. What occurs when a rock undergoes metamorphism by being heated by
nearby magma?
a. erosion
b. deposition
c. regional metamorphism
d. contact metamorphism
4. The effect of contact metamorphism is greatest when the rock comes in
direct contact with what?
a. water
b. magma
c. sediment
d. soil
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Rocks: Mineral Mixtures
Name ______________________________ Class ___________________ Date __________________
Directed Reading B continued
Regional Metamorphism
Circle the letter of the best answer for each question.
5. What deforms and chemically changes rocks by means of increases in
pressure and temperature?
a. erosion
b. contact metamorphism
c. regional metamorphism
d. deposition
6. What kind of metamorphism occurs over large areas deep in the Earth’s
crust?
a. regional metamorphism
b. erosion
c. contact metamorphism
d. deposition
COMPOSITION OF METAMORPHIC ROCK
Read the words in the box. Read the sentences. Fill in each blank with
the word or phrase that best completes the sentence.
stable
index minerals
pressure
7. Metamorphism occurs when temperature and ______________________
inside the Earth’s crust change.
8. During metamorphism, the original minerals change into minerals that are
more ______________________ in the new conditions.
9. The presence of ______________________ indicates the temperature,
pressure, and depth of rocks that undergo metamorphism.
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Rocks: Mineral Mixtures
Name ______________________________ Class ___________________ Date __________________
Directed Reading B continued
TEXTURES OF METAMORPHIC ROCK
Foliated Metamorphic Rock
Read the description. Then, draw a line from the dot next to each
description to the matching word.
10. the property of having mineral grains
that are arranged in bands
11. what shale becomes under pressure
12. rock formed when slate is exposed to
more heat and pressure
13. rock formed when schist is exposed to
more heat and pressure
•
•
•
•
a. slate
b. gneiss
c. foliated
d. phyllite
Nonfoliated Metamorphic Rock
14. What do we call metamorphic rocks in which mineral grains are not
arranged in bands?
a. slate
b. foliated
c. nonfoliated
d. gneiss
15. What do we call the process in which crystals change in size or
composition?
a. foliation
b. recrystallization
c. sedimentation
d. deformation
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
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Rocks: Mineral Mixtures
Name ______________________________ Class ___________________ Date __________________
Directed Reading B continued
Circle the letter of the best answer for each question.
16. What forms when quartz sandstone is exposed to heat and pressure?
a. phyllite
b. gneiss
c. shale
d. quartzite
METAMORPHIC ROCK STRUCTURES
17. What is the term that describes the change in the shape of rock caused by
squeezing or stretching?
a. cementation
b. metamorphism
c. recrystallization
d. deformation
18. What do folds and bends in rocks show?
a. They have been weathered.
b. They have been deformed.
c. They have been eroded.
d. They have been melted.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
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Rocks: Mineral Mixtures