Properties of Rocks and Minerals
How is a cookie a rock and a mineral?
The pieces inside are minerals (chocolate chips).
The whole cookie is a rock because it is made up of different minerals.
What are the TWO types of mining?
- open pit mining
- underground mining
True or false?
We use rocks and minerals for just about everything.
True - rocks and minerals make up most of the products we use in everyday life.
How are igneous rocks formed?
When lava cools and hardens it forms igneous rocks.
Magma from inside the Earth rises to the surface, cools, hardens and becomes igneous rocks.
After erosion/weathering, igneous rocks break down and with heat and pressure they change into metamorphic rocks.
When rocks are squeezed together (compressed) and rock types create layers in the rocks - it creates sedimentary rocks.
Are rocks and minerals the same thing?
No, they are not. Minerals are one substance throughout the whole piece.
Rocks are when there are 2 or more minerals combined.
What are two positive parts of mining?
- get the materials we need
- find new minerals
- learn more about the Earth
- creates jobs for people
True or false?
Rocks and minerals only have one purpose.
False - we use rocks and minerals for many different products.
Which rock type needs heat, time and pressure to change?
Metamorphic rocks
What are THREE ways we can classify minerals?
Three of these:
- hardness, streak colour, colour, lustre, texture
What are two negative parts of mining?
- bad for the landscape
- harmful chemicals
- work can be dangerous (can become trapped)
How would we recycle rocks and minerals?
- new rocks are made from older rocks
- recycled materials are used to create new materials
Which rock type most often has fossils found in it?
Sedimentary rocks
What are two minerals on the Moh's Hardness Scale?
Any two:
TALC, GYPSUM, CALCITE, FLOURITE, APATITE, ORTHOCLASE, QUARTZ, TOPAZ, CORUNDUM, DIAMOND
Who might think that mining is a great idea?
Who might think that mining is negative?
Positive - miners, manufacturers
Negative - landowners, people concerned about the environment, Aboriginals
What are THREE ways we use rocks and minerals for everyday uses?
- dishes, jewellery, bricks, windows, glass, salt, clay, aluminum for cans... (other answers)
Different types of rock or fossils are compressed together over time to form layers of sedimentary rock.