Wednesday, April 12, 2023

The Earth’s Crust

Rocks and Minerals

Rocks and MineralsWith a partner, examine the rock (granite) that you were given at the start of class.

How many different colours can you see?

List the different colours you see.

Rocks

Rock – a natural material made up of 2 or more minerals e.g. – granite or conglomerate

MineralsMineral – a pure, naturally occurring, non living, solid e.g. – mica, quartz, hornblende, feldspar

Minerals are made of elements or mixtures of elements Elements - pure substances – gold, silver, copper, zinc, etc. (e.g. quartz is a mixture of silicon and oxygen)

There are over 3000 different kinds of minerals (and each one has its own unique set of properties).We can use these differences to help identify them.