Across
- 4. energy energy produced per unit mass
- 6. ____ source is replenished at a rate faster than it is used
- 8. ____ fuels type of non-renewable energy source
- 12. fossil fuels are derived from ____ solar radiation
- 13. ____ of energy: tells us that energy cannot be created or destroyed
- 14. fuels have a higher density and specific energy than fossil fuels
Down
- 1. energy something has ______ when there is no way to make the energy more spread out than it already is
- 2. source resources that have been converted or stored
- 3. a substance than can release energy by changing its chemical or nuclear structure
- 4. ___-Gyorgyi said "Discovery consists of seeing what everybody has seen and thinking what nobody has thought"
- 5. second law of _____ states that heat always moves from hotter objects to colder objects
- 7. energy conversions are never 100% ______
- 9. where most of our energy is derived from
- 10. the ability to do work
- 11. density energy produced per unit volume