6Th Grade Science Sources Of Energy Answers And Questions Example For Students

6Th Grade Science Sources Of Energy Answers And Questions Question Answer Energy resources that can be recycled or replaced by natural processes in less than about 100 years are considered _____. renewable Energy from the sun is (renewable/non-renewable) and it doesnt cause _____. pollution Enough energy from the _____ reaches Earth in an _____ to supply all the energy in the world uses and one year. sunhour Energy from the sun is called _____. solar energy Solar calculators are powered by solar cells, which collect light and change it into _____. electricity Nonpolluting, _____ and abundant solar energy sounds wonderful. renewable Solar energy has some serious drawbacks. Solar cells cant work at _____. night Different parts of the Earth receive _____ amounts of solar energy. different Some scientists think that the best solution to energy problems might be to use _____ _____ and _____ in combination with other energy resources. fossil fuels? Today, windmills are used to generate _____ worldwide. electricity In the U.S., regions of the Northeast, the _____, the Great Plains, and the _____ have been identified as having wind conditions best suited to using wind power. MidwestWest Wind is _____. It does not harm the _____ or produce waste. non-pollutingenvironment Only a few regions of the world have _____ strong enough to generate electricity. winds The production of electricity using water is called _____ _____. hydroelectric power The river water that backs up behind a dam creates a _____ or large reserve of water. reservoir Hydroelectric power doesnt cause pollution and it is _____. renewable Hydroelectric power as an energy source has its problems. When dams are built, the reservoir located behind the dam can fill with _____. sediiment Land above the dam flooded and wildlife _____ are disturbed. habitats Power plants have already been _____ near most rivers. built The heat from magma and hot rock that surrounds it is called _____ _____. geothermal energy. People in Iceland and California use the _____ _____ and steam from geysers to heat their homes. hot water Geothermal energy has disadvantages. It can release hot, salty water at Earths surface, which can be harmful to nearby _____ and _____. plantsanimals Only a few places have _____ near the Earths surface. magma Nuclear energy is produced by splitting the _____ of certain elements. nuclei The most commonly used fuel in nuclear power plants is _____. uranium Nuclear energy also produces highly _____ nuclear waste. radioactive This waste contains materials that can cause _____ or have other harmful effects on living things. cancer Because of potential problems in storing nuclear waste, nuclear energy has seen limited use in the _____ _____. United States _____% of the worlds energy is supplied by fossil fuels. 90