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(6.5) What are the steps to generate electricity?
Heat → water into steam → steam turns a turbine → turbine powers generator → generator produces electricity
what are environmental consequences of coal?
Habitat destruction, produces pollutants and releases CO2, etc
What is congregation?
When the heat produced from electricity generation is used to provide heat (air and hot water) to a building
What are environmental consequences to tar sand?
Habitat destruction to clear land for: roads, drilling equipments, digging through ground surface to reach deposits
(6.6) What are control rods?
… are lowered into reactor core to absorb neutrons and slow down the reaction; preventing meltdown (explosions)
what is a water pump?
… Brings in cool water to be turned into steam and also cools reactor down from overheating
what are cooling towers?
… allows steam from turbine to condense back into liquid and cool down before being reused (this gives off H20 vapor)
True or false: is nuclear power renewable or nonrenewable? explain
It is nonrenewable because radioactive elements like uranium are limited
What are some drawbacks of nuclear energy?
possibility of a meltdown, and radioactive contamination
What are spent fuel rods?
used fuel rods remain radioactive for millions of years and need to be stored in lead containers on site @ nuclear PPs
What are mine tailings?
leftover rock and soil from mining may have radioactive elements that can contaminate water or soil nearby
What are three most famous nuclear meltdowns?
Three mile island (US), Fukushima (Japan), and Chernobyl (Ukraine)
Explain what happened at the three mile island meltdown
Partial meltdown due to testing error; radiation released but no deaths or residual cancer cases
Explain what happened at Fukushima meltdown
An earthquake and tsunami triggered cooling pump failure that lead to a meltdown (explosion of reactor core) and widespread radiation release
Explain what happened at Chernobyl meltdown
Stuck cooling valve during test lead to complete meltdown (explosions of reactor core), several deaths, and widespread radiation release
Identify and describe one letter in the diagram that is common to both nuclear and fossil fuel electricity production.
C: Water pumps are used both in Nuclear and fossil fuel production, the use of water in fossil fuels is to drill straight into the sediments, while the use of water in nuclear is to reduce heating and meltdowns.
(Using the same picture) Identify and describe one letter in the diagram that is found ONLY in nuclear power plants.
A: the control rods relate to fissions, and atoms that necessary in nuclear production, but is not necessary in the production of fossil fuels.
Explain the nuclear plant pieces
- Control rods are lowered into reactor core to absorb neutrons and slow down the reaction, preventing meltdown (explosion)
- Water pump brings in cool water to be turned into steam and also cools reactor down from overheating
- Cooling tower allows steam from turbine to condense back into liquid and cool down before being reused (this gives off H2O vapor)
