Across
- 4. ______ dioxide is the greenhouse gas associated with fossil fuels
- 7. The Department of _____ operates the 17 US National Laboratories
- 10. An energy source that was first harnessed during WWII
- 11. Type of fuel derived from living matter
- 12. Type of energy derived from steam stored in the Earth's core
- 14. Fossil fuel that powered the Industrial Revolution
- 15. Type of power that comes from the sun's differential heating of air
- 16. The scientific name for energy derived from solar cells
- 17. The only US State where solar power is amongst the top two power sources
- 18. Most common unit of energy used to measure electricity usage
- 19. Modern engines rely on internal _____
Down
- 1. 55 x 10^12 Joules = 55 ___Joules
- 2. The English word to describe the prefix 'exa'
- 3. Term for usage of energy and resources that serves people today and will continue to do so in future generations
- 4. The form of energy that comes from food and fossil fuels
- 5. Name of the most popular fossil fuel used in the transportation sector
- 6. Common unit for heat energy, ______ thermal units.
- 8. Energy usage via the food chain is _______
- 9. The Laws of _____ describe the limits on how much energy we can use and transfer efficiently
- 13. Base unit of Power
- 15. The 'useful' form of energy in most industry