Across
- 4. a state where an atom has a higher energy than it has in its ground state
- 8. the process of an electron moving to a higher energy level
- 11. transmits heat from sun, fires, and radiators
- 15. the number of waves that pass a certain point in a specific time (usually one second)
- 18. contains all wavelengths of light in a certain range
- 19. electrons are ejected from a metal when light shines on it and electricity is generated (Example: solar panels)
- 21. the process of an electron falling to a lower energy level
- 23. used in medicine for killing cancer cells
- 24. As frequency increases, energy ___________.
- 25. the entire range of all the forms of electromagnetic radiation
Down
- 1. the lowest energy state of an atom
- 2. makes things able to be seen
- 3. used to view inside of bodies and objects
- 5. a form of energy that exhibits wavelike behavior as it travels through space
- 6. the distance between 2 corresponding points on adjacent waves
- 7. absorbed by the skin, used in fluorescent tubes
- 9. used to broadcast radio and television
- 10. electromagnetic radiation has properties of both waves and particles
- 12. the pattern of lines formed when light passes through a prism to separate it into its different wavelengths of light
- 13. As wavelength increases, frequency ____________.
- 14. the minimum quantity of energy that can be lost or gained by an atom
- 16. a particle of electromagnetic radiation that is equal to a quantum of energy
- 17. used in cooking, radar, telephone, and other signals
- 20. an atomic model where electrons circle the nucleus only in orbits
- 22. proposed the relationship between the energy of a photon and the frequency of radiation