Ores are rocks that contain large amounts of certain metal iron. and for an example a rock that contains deposits of iron. copper ore is a rock that contains concentrations of copper.
300
True or False. There is 4000 different types of minerals.
True
400
What is fly ash? How is it used?
Fly Ash is a mineral mined from the earth and is used for burning coal
400
How is each type of rock formed?
Igneous
Forms slowly when magma hardens
Sedimentary
are formed on top of existing rocks and are made from a mineral that comes from other rocks and shells
Metamorphic
forms when sedimentary or igneous rock is under pressure or squeezed together or both
400
Explain all the properties of minerals
color: minerals come in many different colors we canrt always identify color because the same mineral an ome in many different colors.
Lustre: lustre is the reflection of light form the surface of a mineral. If a mineral looks shiny it has a metallic lustre. If it is not shiny it is a non metallic lustre.
Hardness: the hardness of a mineral can be an important clue to its identity.There is a scale from 1-10
Transparency: the transparency of a material describes how well the light passes through it.
Magnetism: some minerals are attracted to magnets
400
what is smelting and why is it important
smelting is a process that uses very high heat to seperate minerals. Without smelting we would not purify medals and create useful products but smelting creates waste including gases.
400
True Or False. Wood is better for building houses rather than stone.