Across
- 3. The bending of a wave passes between two substances in which the speed of the wave differs
- 4. An electron emitted as a result of the photoelectric effect
- 6. Describes an object that is not transparent or translucent
- 7. The passing of light or other form of energy through matter
- 9. A certain set value and not continuous
- 12. Wave A wave that consist of electric and magnetic fields that vibrate at right angles to each other
- 14. An interaction of light with matter that causes light to change its energy, direction of motion, or both
- 15. Describes matter that allows light to pass through with little interference
- 18. Frequency The frequency below which no photoelectrons are emitted
- 19. A substance that gives another substance or a mixture its color
- 20. Duality The fact that light has both wave and particle properties
- 23. A tiny packet or particle of light
- 24. Transfer of energy as electromagnetic waves
Down
- 1. A change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening
- 2. Voltage The applied reverse voltage which just stops all photoelectrons from reaching the anode
- 5. Spectrum All of the frequencies of wavelengths of electromagnetic radiation
- 8. Effect When light causes electrons to be emitted from a metal
- 10. Describes matter that transmits light but that does not transmit an image
- 11. In optics, the transfer of light energy to particles of matter
- 13. The combination of two or more waves that result in a single wave
- 16. Energy Planck's constant times frequency of light
- 17. The positive terminal where photoelectrons recombine to create a photocurrent
- 20. Function The minimum energy required for photons to remove electrons from the surface of a metal
- 21. The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
- 22. The negative terminal from which photoelectrons are emitted