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The wind always flows from _______ to _______ pressure
high to low pressure
Name two disavantages of solar energy.
high cost, low efficiency
Name two disavantages of hydro power.
displacing animals and families, and risks of flooding
True or false: geothermal uses the heat from radioactive decay in inner layes of the Earth.
True
True or false: biomass burns all types of crude oil to generate electricity.
false
What is the main renewable energy source in the world?
hydroelectric
True or false: there two ways to use the sun to generate electricity.
True: photovoltaic pannels and thermal
what is the main energy source in the world?
crude oil
What is the energy used to cook in the kitchen?
natural gas
Name 4 points that make a useful energy source.
sustainability, cost, avaiability, minimal pollution
Ethanol comes from ___________.
sugar cane.
True or false: tides can generate electricity
True
True or false: In Iceland 90% of homes use geothermal as a form of heating.
True
True or false: oil is formed from the remains of marine dead organisms
True
