CH 26

Question 1

a naturally occurring inorganic solid with a crystalline form

Answer 1

mineral

Question 2

the color of a material in powdered form is called

Answer 2

streak

Question 3

minerals that break with irregular surfaces exhibit

Answer 3

fracture

Question 4

when a mineral breaks along preferred planes of weakness creating sets of smooth parallel sides it has

Answer 4

cleavage

Question 5

the physical property that measures a minerals resistance to scratching is called

Answer 5

hardness

Question 6

molten rock material inside earth is called

Answer 6

magma

Question 7

define rock

Answer 7

naturally formed mixture containing minerals rock fragments and volcanic glass

Question 8

how are rocks identified

Answer 8

by their composition and texture

Question 9

what does the texture of a rock describe about a rock

Answer 9

size shape and arrangement

Question 10

where do intrusive igneous rocks form

Answer 10

within the crust

Question 11

what type of molten rock does intrusive igneous rocks form from

Answer 11

magma

Question 12

what is the name of the series that illustrates simultaneous crystallization of silicate minerals.

Answer 12

Bowen’s reaction series

Question 13

what are the 3 types of magma

Answer 13

mafic intermediate felsic

Question 14

which magma type has a low silica content

Answer 14

mafic

Question 15

which magma type has a high silica content

Answer 15

felsic

Question 16

which type of crust has an abundant amount of quartz(oceanic or continental)

Answer 16

continental

Question 17

which type of crust has little to no quartz

Answer 17

decontinental or oceanic

Question 18

which type of igneous rock has a coarse grained texture

Answer 18

intrusive igneous rocks

Question 19

which type of igneous rock has a fine grained texture

Answer 19

extrusive igneous rock

Question 20

do fine grained rocks cool slowly or quickly

Answer 20

quickly

Question 21

what are the 2 specific texture types for extrusive igneous rock (this answer was our weekly question for Tuesday)

Answer 21

vesicular and porphyritic

Question 22

which texture is the type with 2 different crystal sizes because of different cooling rates

Answer 22

porphyritic

Question 23

which texture is the type with holes left behind because of rapid cooling

Answer 23

vesicular

Question 24

what type of rock has a vesicular (holey) texture

Answer 24

pumice