Across
- 4. system of planets and other bodies that orbits a star
- 6. type of radiation that has the longest wavelength and lowest energy
- 8. collection of billions of starts and their planet systems
- 10. large object in space that is made of gas and produces its own light
- 11. type of radiation that causes sun burns or is also used in remote control devices
- 14. smallest particle of matter or smallest part of an element
- 15. type of radiation that carries or transports heat energy
Down
- 1. type of radiation that the human eye can see
- 2. type of radiation with the shortest wavelength and highest energy
- 3. all frequencies and wavelengths of light radiation
- 5. type of radiation cell phones and quick cooking ovens use
- 7. average distance between the Earth and the Sun equal to about 93 million miles
- 9. type of radiation we use to see our bones
- 12. distance light travels in one year equal to about 6 trillion miles
- 13. transfer of energy using waves and without a medium(through empty space)