Energy

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Across
  1. 7. A resource that has a theoretically unlimited supply and is not depleted when used by people.
  2. 8. A source of energy that has a finite supply capable of being exhausted.
  3. 10. Uses the rise and fall of tides to convert kinetic energy of incoming and outgoing tides into electrical energy.
  4. 11. Concentration of waste added to air, water, or land at a greater level than occurs in average air, water, or land.
  5. 12. Solar power harvests the energy of the sun through using collector panels to create conditions that can then be turned into a kind of power.
  6. 13. A fossil fuel is a hydrocarbon-containing material formed underground from the remains of dead plants and animals that humans extract and burn to release energy for use. The main fossil fuels are coal, petroleum and natural gas, which humans extract through mining and drilling
  7. 14. Generation of electricity using flowing water (typically from a reservoir held behind a dam or other barrier) to drive a turbine that powers a generator.
Down
  1. 1. Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat.
  2. 2. Plant or animal material used as fuel to produce electricity or heat. Examples are wood, energy crops, and waste from forests, yards, or farms.
  3. 3. Wave power is produced by the up and down motion of floating devices placed on the surface of the ocean. In other words, wind produces waves, and then waves produce energy. As the waves travel across the ocean, high-tech devices capture the natural movements of ocean currents and the flow of swells to generate power.
  4. 4. Uses large turbines to take available wind as the power to turn, the turbine can then turn a generator to produce electricity.
  5. 5. The separation, collection, processing, marketing, and reuse of unwanted material.
  6. 6. The energy is created through a specific nuclear reaction, which is then collected and used to power generators.
  7. 9. Energy that is produced from beneath the earth.