ROCKS AND MINERALS

A mineral that most living things need-you can find

this in milk or cheese

Calcium

A resistance of a material or metal to scratching or

breaking

Hardness

The way the light reflects from the

surface of a mineral

Luster

A shiny, dense substance that easily conducts

heat and electricity

Metal

A natural, solid substance found in

rocks

Mineral

minerals in rock that can be

extracted and used by people to make

things

Ore

The color of a mineral in a

powered form

Streak

a type of rock that forms when melted

rock cools and hardens

Igneous Rock

one of the major types of rock that is

created from previously existing

rock by the action of intense heat and

pressure

Metamorphic Rock

 a type of rock formed by gravity pressing

fragments of other rocks and minerals together as

they settle on land or under the ocean over a

long period of time

Sedimentary Rock