chapter 26.2

Question 1

define rock

Answer 1

is a naturally formed mixture containing minerals, rock fragments, 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 a rock?

Answer 3

size, shape, and arrangement of the rock´s components.

Question 4

Where do intrusive igneous rocks form?

Answer 4

form within the earths 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 illustrates simultaneous crystallization of silicate minerals?

Answer 6

Bowen´s reaction series

Question 7

what are the 3 types of magma?

Answer 7

Mafic, felsic, intermediate

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 crsut

Question 11

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

Answer 11

oceanic crust and deep continental crust

Question 12

which type of igneous rock has a coarse grained texture?

Answer 12

intrusive

Question 13

which type of igneous rock has a fine grained texture?

Answer 13

extrusive

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

vesicular and 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