chapter 26.2

Question 1

define rock

Answer 1

naturally formed mixture containing minerals, rock fragments, and volcanic glass

Question 2

how are rocks identified

Answer 2

by their composition ans texture

Question 3

what does the texture of a rock describe about a rock

Answer 3

size, shape, and arrangement of the rocks components

Question 4

where do intrusive igneous rocks form

Answer 4

within the earth´s crust

Question 5

what types of molten rock does intrusive igneous rocks form from

Answer 5

magma

Question 6

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

Answer 6

bowen´s reaction series

Question 7

what are the 3 types of magma

Answer 7

mafic,intermediate, and felsic

Question 8

which magma type has a low silica content

Answer 8

mafic

Question 9

which magma type had 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 crust

Question 11

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

Answer 11

oceanic crust and deep continental

Question 12

which type of igneous rock has a coarse grained texture

Answer 12

intrusive igneous rock

Question 13

which type of igneous rock has a fine grained texture

Answer 13

extrusive igneous rock

Question 14

do fine grained rocks cool slowly or quickly

Answer 14

quickly

Question 15

what are two specific texture types for extrusive igneous rock?

Answer 15

vesicular, porphyritic

Question 16

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

Answer 16

vesicular

Question 17

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

Answer 17

porphyritic

Question 18

what type of rock has a vesicular (holey) texture

Answer 18

pumice