Chapter 26.2

Question 1

What is a rock?

Answer 1

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

Question 2

How are rocks identified?

Answer 2

composition and texture

Question 3

What does the texture of a rock describe about a rock?

Answer 3

the texture describes the size, shape and arrangement of the rock’s component

Question 4

Where do intrusive igneous rocks form?

Answer 4

within

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 reactions 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 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 a little to no quartz? (oceanic or continental)

Answer 11

Deep continental or oceanic

Question 12

Which type of igneous rock has a coarse grained texture?

Answer 12

Intrusive

Question 13

Which type of igneous has a fine grained texture?

Answer 13

Extrusive

Question 14

Do fined 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 texture and porphyoryic texture

Question 16

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

Answer 16

visicular

Question 17

Which texture is the type with two different crystal sizes because of different cooling rales?

Answer 17

porphyritic

Question 18

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

Answer 18

pumice