Ch 2 test

Question 0

The repeating pattern of a minerals’s particles form this solid,

Answer 0

Crystal

Question 1

This substance must have all 5 characteristics: naturally occurring, inorganic, solid, crystal structure, and definite chemical composition.

Answer 1

Mineral

Question 2

A mineral must be this?

Answer 2

Inorganic

Question 3

The color of a minerals powder.

Answer 3

Streak

Question 4

The term used to describe how light is reflected from a minerals surface.

Answer 4

Luster

Question 5

A scale that ranks ten minerals from softest to hardest.

Answer 5

MOHs hardness scale

Question 6

A mineral that splits easily along flat surfaces has this property.

Answer 6

Cleavage

Question 7

Describes how a mineral looks when it breaks apart in an irregular way.

Answer 7

Fracture

Question 8

Is generally a light colored rock that has silica content.

Answer 8

Granite

Question 9

A dark colored rock

Answer 9

Basalt

Question 10

What do geologist observe when studying a rock sample?

Answer 10

Mineral composition, color, and texture.

Question 11

How many minerals make up most of the earth’s crust?

Answer 11

About 20

Question 12

This gives the rock it’s texture.

Answer 12

Grains

Question 13

The look and fill of a rocks surface.

Answer 13

Texture

Question 14

Often the grains in a rock are large and easy to see.

Answer 14

Grain size

Question 15

The grains in a rock vary widely in shape.

Answer 15

Grain shape

Question 16

The grains in a rock often form patterns.

Answer 16

Grain pattern

Question 17

Rocks are classified into three major groups.

Answer 17

Igneous rock, sedimentary rock, and metamorphic rock.

Question 18

Forms from the cooling if magma or lava.

Answer 18

Igneous rock

Question 19

Forms when particles of other rocks or the remains of plants and animals are pressed and cemented together.

Answer 19

Sedimentary rock

Question 20

Forms when an existing rock is changed by heat, pressure, or chemical reactions.

Answer 20

Metamorphic rock

Question 21

Classified according to their origin, texture, and mineral competition.

Answer 21

Igneous rock

Question 22

Igneous rock formed from lava that erupted onto the earth’s surface.

Answer 22

Extrusive rock

Question 23

Igneous rock formed when magma hardens beneath the earth’s surface.

Answer 23

Intrusive rock