Across
- 3. invisible rays that are part of the energy that comes from the sun
- 5. outer layer that creates the solar wind
- 7. the most important source of energy for life on Earth
- 8. fuels produced from plants
- 9. a renewable resource that uses animal and plant matter or waste
- 12. giant explosions on the sun
- 15. a renewable energy produced by the tides
- 17. the conversion of organic waste into mulch or humus through natural decomposition
- 19. are natural resources that can be replenished
- 20. the ability to do work
- 22. a renewable resource that uses water
- 23. heat energy from the sun
- 27. the uses of bacteria to clean up oil spills
- 28. states that energy cannot be created or destroyed
- 29. solid combustible mixture of hydrocarbons called kerogen
Down
- 1. a renewable resource that is unpredictable and indirectly comes from the Sun’s energy
- 2. the stored energy an object has because of its position or state
- 4. a flow of particles that comes off the sun
- 6. Fuels fuel that have been formed from the fossilized remains of prehistoric plants and animals
- 7. a renewable resource that comes from the Sun’s energy
- 10. most abundant of nonrenewable resource produces sulfur dioxide
- 11. a careful preservation and protection of something
- 13. cooler areas of surface that appear darker
- 14. the energy of motion
- 16. the use of energy resources in the ways that are most productive
- 18. rain that has a lower than normal pH level because of burning fossil fuels
- 21. occurs when heat energy is transferred from earth’s surface air to atmospheric air
- 24. use of an item over and over
- 25. the use of high pressured water to located natural gas underground
- 26. a renewable energy from heat underground produced by Earth’s interior