Unit 3 Mining and Energy Resources
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What is rock made up of?
a combination of minerals
What are minerals made up of?
a combination of elements
What are two types of elements? Give examples.
Metals and Nonmetals Metals- iron, copper, aluminum Non-metals- salt, silt, clay, sand, phosphates
Energy resources
coal, oil, natural gas, uranium
overburden
soil/rock about the mineral
reserve
-high concentration of mineral -where you can find oil and coal
ore
Ore is the desired, economically valuable mineral deposit.
gangue
Gangue is the worthless, unwanted material mixed inside the ore body.
smelting
process of heating to extract a metal
subsidence
cave in
dredging
excavation of material from a water environment
What’s the point of a turbine
It’s a device with blades that harnesses kinetic energy
Acid rain and how it’s caused
acidic rain caused by mining and runoff
What are the steps for a power plant
-mine for coal -crush the coal -burn coal to boil water -steam turns turbine -turbine turns generator -electricity is made.
What is the generator
a device turned by turbine/magnets force the electrons to move along the wire to generate electricity
Chimney stack
Removes smoke from the boiler
Pulverizer
Breaks up large solid pieces of coal into dust
Transmission lines
Carry energy from the plant throughout the electrical grid
cooling tower
where water is cooled and discharged
condenser
used to change steam back to liquid
boiler
this device heats water to make steam
steam
contains kinetic energy that is transferred to the blades of the turbine
electrical grid
network of transmission lines
What are some environmental impacts from running a power plant?
-polluted air -damage to habitat -heated earth -coal ash -thermal pollution in water