6th Grade Science Sources of Energy
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Energy resources that can be recycled or replaced by natural processes in less than about 100 years are considered _____. | renewable
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| Energy from the sun is (renewable/non-renewable) and it doesn't cause _____. | pollution
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| Enough energy from the _____ reaches Earth in an _____ to supply all the energy in the world uses and one year. | sun
hour
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| Energy from the sun is called _____. | solar energy
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| Solar calculators are powered by solar cells, which collect light and change it into _____. | electricity
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| Nonpolluting, _____ and abundant solar energy sounds wonderful. | renewable
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| Solar energy has some serious drawbacks. Solar cells can't work at _____. | night
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| Different parts of the Earth receive _____ amounts of solar energy. | different
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| Some scientists think that the best solution to energy problems might be to use _____ _____ and _____ in combination with other energy resources. | fossil fuels
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| Today, windmills are used to generate _____ worldwide. | electricity
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| 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. | Midwest
West
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| Wind is _____. It does not harm the _____ or produce waste. | non-polluting
environment
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| Only a few regions of the world have _____ strong enough to generate electricity. | winds
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| The production of electricity using water is called _____ _____. | hydroelectric power
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| The river water that backs up behind a dam creates a _____ or large reserve of water. | reservoir
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| Hydroelectric power doesn't cause pollution and it is _____. | renewable
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| Hydroelectric power as an energy source has its problems. When dams are built, the reservoir located behind the dam can fill with _____. | sediiment
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| Land above the dam flooded and wildlife _____ are disturbed. | habitats
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| Power plants have already been _____ near most rivers. | built
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| The heat from magma and hot rock that surrounds it is called _____ _____. | geothermal energy.
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| People in Iceland and California use the _____ _____ and steam from geysers to heat their homes. | hot water
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| Geothermal energy has disadvantages. It can release hot, salty water at Earth's surface, which can be harmful to nearby _____ and _____. | plants
animals
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| Only a few places have _____ near the Earth's surface. | magma
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| Nuclear energy is produced by splitting the _____ of certain elements. | nuclei
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| The most commonly used fuel in nuclear power plants is _____. | uranium
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| Nuclear energy also produces highly _____ nuclear waste. | radioactive
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| This waste contains materials that can cause _____ or have other harmful effects on living things. | cancer
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| Because of potential problems in storing nuclear waste, nuclear energy has seen limited use in the _____ _____. | United States
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| _____% of the world's energy is supplied by fossil fuels. | 90
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