26.2

Question 1

define rock

Answer 1

a naturally formedmixture that can contain minerals, rock fragments, and volcanic glass bound together

Question 2

how are rocks identified?

Answer 2

on texture and compisition

Question 3

what does the texture of rock describe about a rock?

Answer 3

size,shape, and arrangement of the rock’s components

Question 4

where do intrusive igneous rocks form?

Answer 4

within Earth’s crust

Question 5

what type of molten rock does intrusive igneous rocks form from?

Answer 5

magma

Question 6

what is the name of the series that illistrates stimultaneous crystallization of silicate minerals?

Answer 6

Bowen’s Reaction

Question 7

what are the 3 types of magma?

Answer 7

mafic magma, intermediate magma, felsic magma

Question 8

which magma type has a low silica content?

Answer 8

mafic

Question 9

which magma type has a high silica content?

Answer 9

felsic

Question 10

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

Answer 10

continental

Question 11

which type of crust has little to no quartz? (oceanic or continental)

Answer 11

oceanic

Question 12

which type of igneous rock has a coarse grained texture?

Answer 12

granite

Question 13

which type of igneous rock has fine grained texture?

Answer 13

andesite

Question 14

do fine grained rocks cool slowly or quickly?

Answer 14

quickly

Question 15

what are the two specific texture types for extrusive igneous rock?

Answer 15

fine-grained or aphanitic texture

Question 16

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

Answer 16

silica-poor mafic

Question 17

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

Answer 17

pyroclastic

Question 18

what type of rock has a vesicular(holey)texture?

Answer 18

pumis