chapter 26.2

Question 1

define rock

Answer 1

A rock 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 texture of a rock describe about a rock

Answer 3

size, shape, and arrangements

Question 4

where do intrusive igneous come from

Answer 4

molten rock material that cools and crystallizes underground

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 materials

Answer 6

bowen’s reaction series

Question 7

what are 3 types of magma

Answer 7

mafic, intermediate, and felsic

Question 8

what magma type has as 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 abundant amount of quartz

Answer 10

continental crust

Question 11

which type of crust has a little to no quartz

Answer 11

volcanic oceanic crust

Question 12

which type of igneous rock has a fine grained texture

Answer 12

extrusive igneous rock

Question 12

which igneous rock has a coarse grained texture

Answer 12

plutonics rock

Question 13

do fine grained rocks cool slowly or quickly

Answer 13

slowly

Question 14

what are two specific texture types for extrusive igneous rock

Answer 14

porphyritic

Question 15

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

Answer 15

vesicular

Question 16

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

Answer 16

porphyritic

Question 17

what type of rock has a vesicular texture

Answer 17

pumice

Question 18

define clasts

Answer 18

Such small rock and mineral fragments

Question 19

what type of erosion are rocks on Earth’s surface exposed to

Answer 19

water, wind, and other forces.

Question 20

what does it mean if clasts are being transported

Answer 20

they often become rounded before being deposited

Question 21

what does it mean if clasts are being deposited

Answer 21

they are often becoming rounded

Question 22

define pore space

Answer 22

they often become rounded before being deposited

Question 23

define compaction

Answer 23

The process by which clasts stick together due to the weight of overlying material

Question 24

define cementation

Answer 24

Minerals precipitate slowly out of a water solution and crystallize in the spaces
between clasts in a process

Question 25

how are sedimentary rocks formed

Answer 25

mostly out of clasts

Question 26

what is another name for clasts

Answer 26

detrituis

Question 27

what are sedimentary rocks called that are mostly made of clasts

Answer 27

detrital sedimentary rock

Question 28

what is the decreasing size for clasts

Answer 28

gravel, sand, silt, or clay

Question 29

which clast size would be deposited first

Answer 29

gravel

Question 30

what are 4 common detrital sedimentary rocks

Answer 30

gravel, sand, silt and clay

Question 31

how are chemical sedimentary rocks formed

Answer 31

chemical sedimentary rocks form from water that contains dissolved solids

Question 32

if sedimentary rocks contain remains of living organisms what are they called

Answer 32

biochemical sedimentary rocks

Question 33

what are 2 common biochemical sedimentary rocks

Answer 33

coal and limestone

Question 34

what are three types of sedimentary rocks

Answer 34

sandstone, limestone, and shale