ROCKS MINERAL 1

Question 1

is homogenous, naturally occurring substance formed through geological processes

Answer 1

mineral

Question 2

color of a mineral when it is powdered is called the____ of the mineral.

Answer 2

streak

Question 3

The ______ of a mineral is the way its surface reflects light.

Answer 3

luster

Question 4

physical appearance

Answer 4

Hardness-Mohs scale
Cleavage
Fracture
others (heft & taste)

Question 5

is the way a mineral breaks.

Answer 5

cleavage

Question 6

is breakage that is not flat.

Answer 6

fracture

Question 7

is how heavy a mineral feels in the hand, an informal sense of density

Answer 7

Heft

Question 8

is definitive for halite (rock salt), of course, but a few other evaporite minerals also have distinctive tastes.

Answer 8

Taste

Question 9

A ___ is a naturally occurring aggregate of minerals and/or other rock fragments

Answer 9

rock

Question 10

rock classification

Answer 10

igneous
sedimentary
metamorphic

Question 11

rocks form when molten rock (magma) cools and solidifies, with or without crystallization,either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.

Answer 11

Igneous

Question 12

plutonic

Answer 12

intrusive

Question 13

volcanic

Answer 13

extrusive

Question 14

refers to the physical appearance or character of a rock, such as grain size, shape, and arrangement.

Answer 14

Texture

Question 15

are usually light colored, and have low density.

Answer 15

felsic rock

Question 16

are usually dark colored, but not always, and have a higher density than felsic rocks.

Answer 16

mafic

Question 17

·, with more than 90% of mafic minerals (e.g., dunite)

Answer 17

ultramafic rock

Question 18

are classified by the source of their sediments

Answer 18

Sedimentary rocks

Question 19

are composed of fragments of older rocks that have been deposited and consolidated

Answer 19

Clastic sedimentary rocks

Question 20

form when minerals precipitate from a solution, usually sea water.

Answer 20

Chemical sedimentary rocks

Question 21

are composed of accumulations of organic debris.

Answer 21

Biochemical sedimentary rocks

Question 22

are the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism,

Answer 22

Metamorphic rocks

Question 23

refers to flat or wavy planar features

Answer 23

Foliation

Question 24

have interlocking grains with no specific pattern

Answer 24

Nonfoliated rocks

Question 25

homogeneous

Answer 25

quartz