chapter 26.2

Question 1

define rock

Answer 1

is a naturally formed mixture containing minerals, rock fragments, and
volcanic glass.

Question 2

how are rocks identified

Answer 2

by their composition and texture.

Question 3

what does the texture of a rock describe about rock.

Answer 3

size, shape, and arrangement of the rock’s

components.

Question 4

where do intrusive igneous rocks from

Answer 4

within Earth’s crust are called intrusive igneous rocks.

Question 5

what type of molten rocks does intrusive igneous rocks form from.

Answer 5

it passes through rock, magma might cause partial melting of the rock it
intrudes.

Question 6

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

Question 7

what are the 3 types of magma

Answer 7

basaltic, andesitic, and rhyolitic,

Question 8

what magma type has low silica content

Answer 8

biotite mice

Question 9

which magma type has a high silica content

Answer 9

olivine

Question 10

witch type of crust has an abundant amount of quartz?

Answer 10

continental

crust.

Question 11

witch type of crust has a little to no quartz?

Answer 11

continental crust or with oceanic crust.

Question 12

which type of igneous rock has a coarse grain texture?

Answer 12

granite

Question 13

witch type of igneous rock has a fine grained texture?

Answer 13

Extrusive igneous rocks

Question 14

do fine grained rocks cool slowly or quickly?

Answer 14

faster

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 raped cooling?

Answer 16

Extrusive igneous rocks

Question 17

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

Answer 17

Porphyritic