Lesson 10: Changes in Mineral Components and Texture of Rocks (Metamorphism)

Question 1

the change that takes place within a body of rock as a
result of it being subjected to conditions that are different from those in which it is
formed.

Answer 1

metamorphism

Question 2

meta means

Answer 2

change

Question 3

morphe means

Answer 3

form

Question 4

is formed at the surface of the Earth through the
process of metamorphism with recrystallization of minerals in rocks due to
changes in pressure and temperature conditions.

Answer 4

metamorphic rock

Question 5

two types of metamorphism

Answer 5

contact and regional metamorphism

Question 6

two main factors of metamorphism

Answer 6

heat and reactive/chemically active fluids and pressure

Question 7

most important factor in metamorphism

Answer 7

heat

Question 8

why is heat the most important factor in metamorphism

Answer 8

it provides the energy to drive the chemical changes which results in the recrystallization of minerals

Question 9

as heat increases, the ___ increases

Answer 9

depth

Question 10

as depth increases, the ___ increases

Answer 10

pressure

Question 11

common chemically active fluids that enhance the metamorphic process

Answer 11

water containing ions in solution

Question 12

low-grade metamorphism of shale

Answer 12

slate

Question 13

foliation surfaces shiny from microscopic mica crystals

Answer 13

phyllite

Question 14

platy mica crystals visible from metamorphism of clay or fledspars

Answer 14

schist

Question 15

high-grade metamorphism; some mica changed to feldspar, segregated by mineral type into bands

Answer 15

gneiss

Question 16

various rocks changed by heat from neary magma/lava

Answer 16

hornfels

Question 17

metamorphism of rocks sandstone

Answer 17

quartzite

Question 18

metamorphism of limestone or dolostone

Answer 18

marble

Question 19

pebbles may be distorted or stretched

Answer 19

metaconglomerate

Question 20

does not actually melt the rocks but transforms
them into denser, more compact rocks. Mineral may also be
rearranged due to chemical reactions involving fluids that enter
rocks

Answer 20

metamorphism

Question 21

used commercially for your classroom blackboards and
for pool table tops.

Answer 21

slate

Question 22

used in the construction of building floors and
bathroom walls and counter parts

Answer 22

marble

Question 23

At pressure and temperature not within the ranges,
the minerals form a different combinations called

Answer 23

mineral assemblages

Question 24

____ and ____ change the original state of an
existing rock and the chemical composition and physical structure of existing rock

Answer 24

extreme heat and pressure

Question 25

combination of minerals in rocks are stable only over:

Answer 25

specific ranges of pressure and temperature