Rocks and Minerals

What type of scientist studies rocks?

• Botanist

• Geologist

• Archaeologist

• Geographer

A mineral is

• an artificially created substance

• an organic substance (made from plants or animals)

• a naturally occurring substance with its own chemical composition, structure and properties

An ore is a mineral with a large amount of useful material

• True

• False

The characteristics of rocks include

• Colour and layers

• Hardness and density

• Crystal size

• All of these

Which property is the most unreliable?

• Colour

• Hardness

• Streak

• Lustre

What is lustre?

• the darkness of the surface of a mineral

• the shininess of the surface of a mineral

• how hard a mineral is

• how easily a rock breaks into layers

What is streak?

• The colour of powdered or crushed mineral

• How easily a mineral can be scratched

• The way a mineral tends to break

• The shininess of a mineral

The hardness of a rock is measured on the

• Mares scale

• Morse scale

• Mohs scale

• Moby scale

The highest number on the hardness scale is

• 5

• 10

• 12

• 20

Will quartz (hardness of 7) be scratched by fluorite (hardness of 4)?

• Yes

• No