WS Energy

2. an electromagnetic wave that reflects off surfaces, allowing the human eye to see
5. a particle of light
6. the discontinuous line spectra of light produced when excited atom return to their grounds take and emit photons of a certain frequency
10. the minimum quantity of energy that can be lost or gained by an atom
11. a region in space within an atom and around the nucleus where the probability of finding an electron is relatively high
13. a travelling disturbance that travels through space and matter
14. any state of an atom that is higher than the ground state
17. the emission of electrons from a metallic surface when the electromagnetic radiation of a high energy frequency is incident on it
20. the ability to do work or cause change

1. the range of electromagnetic radiation organized
3. the lowest possible energy state of an atom
4. the proportionality constant relating a photon's energy to its frequency
7. a form of electromagnetic energy
8. the portion of the electromagnetic spectrum that is visible to the human eye
9. electromagnetic waves with the longest wave length and lowest frequencys
12. the distance (from crest to crest) in the line of a wave from any point to the next
15. the energy levels contained within a principal energy levels
16. the maximum distance that the particles of a wave's medium vibrate from their rest position
18. a negatively charged particle that can be bound to an atom
19. the number of waves produced in a given amount of time