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Earth's Resources 4.1- 4.3

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Across
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A substitute for petroleum supplies (2)
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Retrieving this source of energy is similar to strip mining for coal. (2)
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The second stage of coal development
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A solution that escapes from magma during the later stages of crystallization
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This maintains warm temperatures near the Earth's surface (2)
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Resources that are replenished over short time spans up to normal human lifespans.
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This is one type of gas that destroys the ozone layer
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An energy that can be created along the ocean in bays or estuaries that spin turbines (2)
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Water that flows over land because it can't seep into the ground
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A kind of greenhouse gas
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Pollution that can be traced to its origin
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This type of power could meet 5-10 % of our electrical demands in your lifetime
Down
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A metallic mineral that is mined because it is profitable
2
Free and nonpolluting energy
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An uparched series of sedimentary rock layers holding oil and gas.
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Minerals that are deposited along streams once they lose the energy to move them
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A source of electricity that drives turbines like those at Lake Norman
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This means hot Earth. Retrieving hot water in the ground for heat and air conditioning
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The other term for soft coal
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An energy source made from fossil fuels
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Resources that takes millions of years to form and accumulate
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These are made up of coil, oil and natural gas. (2)
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This layer protects us from the sun's radiation
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Uranium is split as it emits neutrons and heat
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A waxy hydrocaarbon