CH.26

Question 1

what is naturally occurring,inorganic solid with a crystalline form?

Answer 1

minerals

Question 2

the color of a mineral in a powdered form is called?

Answer 2

streak

Question 3

when a mineral breaks along preffered planes of weakness creating sets of smooth parallel sides it has?

Answer 3

cleavage

Question 4

minerals that break with irregular surfaces exhibt

Answer 4

fractures

Question 5

the physical property that measures a minerals restistance to scratching is called?

Answer 5

hardness

Question 6

molten rock marterial inside earth is called?

Answer 6

magma

Question 7

a naturally occurring, inorganic solid with a definite chemical composition and an orderly arrangement f atoms

Answer 7

mineral

Question 8

a solid in which the atom are arranged in a orderly, repeating pattern

Answer 8

crystal

Question 9

what are the two ways crystals can be formed?

Answer 9

magma and solutions

Question 10

minerals the contain silicon and oxygen and usually one or more other elements

Answer 10

silicate

Question 11

define rock

Answer 11

they contain minerals,rock fragments, and volcanic glass

Question 12

how are rocks identified?

Answer 12

by their composition and texture

Question 13

what does the texture of a rock described about a rock?

Answer 13

size,shape,and arrangement of the rocks components

Question 14

where do intrusive igneous rocks form?

Answer 14

within the earths crust

Question 15

what type of molten rock does intrusive igneous rocks form from?

Answer 15

magma

Question 16

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

Answer 16

bowen’s reactions series

Question 17

what are 3 types of magma?

Answer 17

Mafic,intermediate,Felsic

Question 18

which magma type has a low silica content?

Answer 18

mafic

Question 19

which magma type has a high content?

Answer 19

Felsic

Question 20

which type of crust has an abundant amount of quartz?

(oceanic or continental)

Answer 20

continental crust

Question 21

which type of crust has little to no quartz?

(oceanic or continental)

Answer 21

deep continental and oceanic crust

Question 22

which type of igneous rock has a coarse grained texture?

Answer 22

intrusive

Question 23

which type of igneous rock has a fine grained texture?

Answer 23

extrusive

Question 24

do fine grained rocks cool slowly or quickly?

Answer 24

quickly

Question 25

what are the two specific texture types for extrusive igneous rock? (this answer was our weekly question for Tuesday)

Answer 25

vesicular and porphyritic

Question 26

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

Answer 26

vesicular

Question 27

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

Answer 27

porphyritic

Question 28

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

Answer 28

extrusive (pumice and scoria)