Download Name Earth Revealed : Metamorphic Rocks 1. The process of

Name _____________________
Earth Revealed : Metamorphic Rocks
1. The process of change by the effects of ________ and ____________
is called metamorphism.
2. Metamorphism can alter the (check only those that apply)
___ the appearance of rocks
___ the mineral content of rocks
___ the age of rocks
3. The term _______________ refers to the original rock existing before
metamorphism. For example, the original rock limestone would be
metamorphosed to form marble.
4. Directed pressure and stress, such as compression, can form a
metamorphic texture known as _____________________.
5. Rising temperature can cause re-crystallization, forming crystals that are
larger../..smaller (circle the correct answer)
6. Migmatites are "mixed rocks", exhibiting the characteristics of both
igneous rocks / metamorphic rocks / sedimentary rocks
(circle the correct choices)
7. During metamorphism, heating causes the loss of volatiles such as
_______________ and ____________________________.
8. Most metamorphic rocks form in one of two geologic settings.
One setting occurs when cold rock is intruded by hot magma.
This is called _______________ Metamorphism .
Associated with convergent plate margins, large scale changes
due to the effects of heat and pressure at cause
___________________ Metamorphism.
9. Groups or assemblages of minerals can act as pressure gauges and
thermometers to indicate the amount of metamorphic change that has
occurred.
Rank the following rocks in order 1 to 5 according to increasing grades of
metamorphism (1 being the original rock)
__ slate __ schist __ phyllite __ gneiss __ claystone
10. As temperature and pressure increase, rocks become metamorphosed.
When temperature and pressure decrease, can rocks be un-metamorphosed?
Explain your answer.
11. As an example of the rate at which metamorphism occurs, geologists
determined that snowball garnets took approximately
____________________ years to form.
Thus, large scale metamorphism is a relatively
fast process / slow process
(circle the correct answer)