Across
- 3. The time taken for radioactivity of a specific isotope to fall to half of its original value.
- 7. The movement of objects and substances from place to place is ____ energy.
- 8. Release CO2, particulate matter, SOx, and NOx when combusted.
- 10. Hot water tanks used to passively collect and store energy or an example of ______ power.
- 12. Process through which plants convert radiant energy from the sun into chemical energy stored in carbohydrates.
- 17. Clean fuel that can be generated through the hydrolysis of water.
- 19. Highest rank of coal.
- 21. Energy harnessed from heat produced in the Earth's core by the slow decay of naturally-occurring radioactive particles.
- 22. Trap sediments and prevent fish from reaching spawning grounds.
- 24. The vibration and movement of atoms and molecules with substances is called _____ energy.
- 26. The scientific rule that states that energy cannon be created or destroyed is called the Law of _______ of energy.
- 27. Vehicles powered by an internal combustion engine and one or more electric motors.
- 28. A hydropower reservoir is an example of _____ potential energy.
Down
- 1. The movement of electrons is ___ energy.
- 2. Nonrenewable energy source, the Middle East and Venezuela have huge reserves.
- 4. Generation of electricity and other energy jointly.
- 5. Cheapest and cleanest way to produce electricity.
- 6. Fission and fusion are examples of _____ energy.
- 9. country with largest reserve of coal
- 11. Any organic material that can be used for its energy content.
- 13. Stored energy and the energy of position are _____ energy.
- 14. Nonrenewable, although methane produced from landfill gas is classified as renewable.
- 15. Energy source that is not derived directly or indirectly from solar energy.
- 16. The most polluting fossil fuel.
- 18. Currently proven global reserves are expected to be largely exhausted within the next 50 years.
- 20. Used to produce about 33 percent of electricity in the US.
- 23. Another term for kinetic energy is _____ energy
- 25. Electromagnetic energy traveling in transverse waves is ____ energy.