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Earth's Resources 4.1- 4.3

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