Chapter 10-11

Question 1

What is a mineral?

Answer 1

Minerals are naturally occuring inorganic solid minerals composed of on element or compound

Question 2

What is a rock?

Answer 2

A rock is a mixture of one or more minerals

Question 3

How do you identify minerals?

Answer 3

a) Moh’s hardness scale
b) shape of crystals
c) Lustre
d) color

Question 4

What is Moh’s hardness scale?

Answer 4

Moh’s hardness scale is based on “hardness” value and is on a scale from 1-10

Question 5

What is lustre?

Answer 5

Lustre is the “shineness” of a material and depends how the light is reflected

Question 6

What is streak?

Answer 6

Streak is when a material is rubbed across a piece of unglazed porcelein tile and it leaves a streak, the streak color is the color of the powdered form of the mineral, mineral with hardness value greater than porcelain will not leave a streak

Question 7

What is cleavage and fracture?

Answer 7

Cleavage is if it breaks along smooth, with flat surfaces. Fracture is when minerals that break with rough or jagged edges

Question 8

What are 3 types of rocks?

Answer 8

1. Igneous Rocks
2. Sedimentary Rocks
3. Metamorphic Rocks

Question 9

What are igneous rocks?

Answer 9

Igneous means fire in greek, is formed when hot magma cools and solidifies, and magma is melted rock found below thw earth’s crust

Question 10

What are sedimentary rocks?

Answer 10

Sedimentary rocks are the most common type of rock on Earth’s surface; formed by compacity of sediment

Question 11

What are metamorphic rocks?

Answer 11

A metamorphic rock is a type of rock made when high pressure and heat act on on another type of rock and change into a new form