Chapter 26.2

Question 1

Define rock

Answer 1

a rock is naturally form mixture containing minerals, rocks fragment, and volcanic glass

Question 2

How are rocks indentified?

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 rocks components

Question 4

Where do intrusive igneous rocks form?

Answer 4

molten rock material that cools and crystallizes either underground or on Earth’s surface

Question 5

What type of molten rock does intrusive igneous rocks form form?

Answer 5

magma

Question 6

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

Answer 6

Bowen reaction series

Question 7

What are the 3 types of magma?

Answer 7

marfic, intermediate and felsic

Question 8

Which are the 3 types has a low silica content?

Answer 8

mafic, fe

Question 9

Which magma type has a high silica content?

Answer 9

olivine, pyroxene and plagioclase

Question 10

Which type of crust has an abundant amount of quartz

Answer 10

continental crust

Question 11

which type of crust has little to no quartz

Answer 11

volcanic oceanic crust

Question 12

which type of igneous rock has a coarse grained texture?

Answer 12

plutonic rocks

Question 13

which type of igneous rocks has a fine grained texture?

Answer 13

extrusive igneous rocks

Question 14

do fine grained rocks cool slowly or quickly?

Answer 14

slowly

Question 15

what are the two specific texture types for extrusive igneous rock

Answer 15

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 texture?

Answer 18

scoria