rock cycle - exam 1

Question 1

how do igneous rocks form?

Answer 1

cooling molten rock

Question 2

magma at the surface of the earth

Answer 2

lava

Question 3

molten rock inside the earth

Answer 3

magma

Question 4

how do metamorphic rocks form?

Answer 4

-heat
-pressure
-fluid interactions

Question 5

to be defined a mineral, a specimen must exhibit what characteristics?

Answer 5

-naturally occurring
-crystalline solid
-possess a specific chemical composition

Question 6

color, streak, hardness, cleavage, fracture, luster, magnetism, hcl acid reaction

Answer 6

key properties of identifying minerals

Question 7

bowen’s reaction series

Answer 7

idealized sequence of which minerals in a rock melt or crystallize

Question 8

slow cooling large grains

Answer 8

phaneritic

Question 9

fast cooling small grains

Answer 9

aphanitic

Question 10

coal is

Answer 10

organic material

Question 11

limestone is

Answer 11

composed mostly of calcite

Question 12

what changes cause metamorphism

Answer 12

heat
pressure
chemically active fluids

Question 13

parallel alignment of mineral grains due to differential stress

Answer 13

foliation

Question 14

metamorphic rocks that form at similar temperature and pressure and thus contain similar mineral assemblages

Answer 14

metamorphic facies

Question 15

foliated rock classification

Answer 15

slaty
phylitic
schist
banding