What type of energy is harvested in hydroelectricity?
KE of moving water
100
Identify 2 advantages to wind energy
Non-depletable
Clean
Free
Can share the land after built for other purposes
100
In a solar water heating system what type of energy from the sun is used?
Heat
100
What form of biomass energy has the US used for the longest time?
wood
100
What is the name of hydroelectric energy that is gathered under water in oceans?
Tidal energy
200
What two factors determine the amount of electricity generated in hydroelectric plants?
Height of water drop AND flow rate of water
200
What is the source of wind energy? (not wind)
Unequal heating of the earth (from the sun) creates air currents (wind)
200
In a Photovoltaic System what type of energy from the sun is used?
Light energy
200
What is the form of biomass energy used by many developing countries for cooking and heating that is depleting forests?
charcoal
200
What is a potentially negative environmental consequence of tidal energy?
Impacts on marine organisms living in the area
300
What are two disadvantages to hydroelectricity?
High costs to build
Threats to ecosystem
Loss of agricultural land due to flooding for reservoir
High use of concrete in building and carbon dioxide production in building
Siltation
Limited areas are available
300
What type of energy moves the turbine?
KE of the wind
300
In Concentrating Solar Thermal Electricity generation mirror and lenses concentrate the sunlight energy. How does this concentrated energy generate electricity?
The heat is used to generate steam which turns a turbine just like in other thermal power plants.
300
Which biofuel is made from corn, sugar cane, and switch grass?
Ethanol
300
What does PV stand for?
Photo voltaic
400
What greenhouse gas is emitted due to increased decomposition of organic matter in reservoirs?
methane
400
What is an environmental disadvantage to wind energy while in use?
Deaths of bats and birds
400
What is a major ENVIRONMENTAL disadvantage of solar energy?
Battery recycling OR high energy investment and toxic chemicals used in manufacturing of solar panels, etc.
400
Which biofuel is made from algae, plants, and salvaged cooking oil?
Biodiesel
400
What category of energy does solar, wind, and hydroelectric fall under?
Renewable
500
What is the largest hydroelectric plant in the world?
Three Gorges Dam
500
Where is there a proposed offshore wind farm for the Northeast?
Nantucket Sound
500
What are the emissions of solar energy during use?
None
500
What does carbon neutral mean?
The amount of Carbon dioxide produced by using the fuel is equal to the amount of modern carbon dioxide taken into create the fuel. There is no net production of Carbon dioxide in "modern" times.
500
What atmospheric problem does the burning of wood contribute to?