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Date: 2015-10-07; view: 639.
Alternative Sources of Energy
Unit 7
 
   
a. Geothermal energy taps into the superhot temperatures below the Earth's surface. Steam vents, geysers, and even magma deep underground supply energy used for heating and electricity. This geothermal power plant is in Iceland, a country which generates almost all of its power through geothermal energy.
b. Biomass energy comes from plants or other organic material, such as refuse (trash). Biomass energy can be converted into biogas, which can be used for a wide variety of purposes, as this innovative project in Kingston, Jamaica, informs consumers.
c. Hydroelectricity is the most popular renewable energy source. Hydroelectric energy is made by flowing water. People can control Hydroelectricity is the most popular renewable energy source. Hydroelectric energy is made by flowing water. People can control the flow of water by building dams on rivers, such as the massive Kariba Dam in Zimbabwe and Zambia. The Kariba Dam blocks the flow of the Zambezi River, creating a huge reservoir (Lake Kariba) behind it. As the dam releases water, it creates electricity used by thousands of people.
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