Rocks 2. Flashcards
What are primary economic activities?
Natural resources from ground
Examples of primary economic workers
Trawlers
Fish farmer
Farmers
What are secondary economic activities?
Making things s
Examples of secondary economic workers
Bakers
What is tertiary economic activities?
Providing a service for people
Example of tertiary economic workers
Doctors
Hairdressers
Teachers
What are the values of rocks?
—rocks can be important natural resource and provide economic benefit to us
—people are employed to extract the rock
—we consume resources that come from rock
What resources do we get from quarries?
Stone
Sand
What resources do we get fro offshore/onshore Mining?
Oil
Natural gas
What resources do we get from mines?
Coal
Copper
Lead
Zinc
Iron
Ore
What resources do we get from deep mines?
Precious stones
Drilling
Oil and gas are extracted from underground reservoirs by drilling down into ground and pumping to the surface. If out at sea it would be on a rig and pumped ashore
Opencast mining/quarrying
If a resource is on or near the surface of the earth open cast mining is used. This is the cheapest form of mining
Shaft mining
Used if the resources is lying under seams deep in earth. Vertical shaft are constructed to reach the seams and bring to the surface. Very expensive form of mining
Tara mines
—Swedish mining group-boldier
—navan, 1970
—largets zinc mine if Europe
—2 mill tonnes of zinc and lead concentrate each yr
