Review for Rocks and Minerals Summative

Minerals are not man made and are inorganic. This means they do not contain plants and animals.

Minerals have properties that help you identify them.

Some properties are: hardness, streak, luster, cleavage, flexibility, color (least important)

Glassy, Shinny, Metallic- These words mean it has a luster

Dull, non-metallic, -These words mean it doesn't have a luster.

When a mineral breaks into smooth pieces or flat surfaces

This can be tested by simply breaking the mineral.

The Moh's hardness scale helps you determine the hardness of the mineral.

It goes from 1 to 10. 1 is the softest and 10 is the hardest (diamond)

You can test hardness by using a penny or your fingernail.

A streak is a minerals powder that it leaves when rubbed on a porcelain plate.

The minerals streak is not always the same as its outside color.

The softer the mineral, the better streak it will leave. If the mineral is harder, you need to push down much more to see the streak.

Rocks are pieces of minerals, other rocks, fossils, seashells, plants and animals that are formed 3 different ways.

There are 3 different types of rocks: igneous, metamorphic and sedimentary.

Rocks are formed by the rock cycle.