Physical Science Crossword Puzzle

6. a material that absorbs some colors of light and reflects other colors of light
7. the rate at which a wave's energy flows through a given area
8. a point where a crest or trough occurs midway between nodes
11. light in which waves have the same wavelength and the crests and troughs are lined up
12. a wave that travels along a surface separating two media
14. the full range of frequencies of electromagnetic radiation
18. longitudinal waves - compressions and rarefactions that travel through a medium
19. a point on a standing wave that has no displacement from the rest position
20. objects that give off their own light
22. light is redirected as it passes through a medium
23. a disturbance in matter that carries energy from one place to another
24. the process in which white light separates into colors
27. a material absorbs light at one wavelength and then emits light at a longer wavelength
28. a false or distorted image
29. material that transmits light

1. a wave in which the vibration of the medium is parallel to the direction the wave travels
2. a device that generates a beam of coherent light
3. the light produced when an object gets hot enough to glow
4. the distance between a point on one wave and the same point on the next cycle of the wave
5. a wave that appears to stay in one place
9. transverse waves consisting of changing electric fields and changing magnetic fields
10. a solid material that can emit light by fluorescence
13. the maximum displacement of the medium from its rest position
15. a wave that causes the medium to vibrate at right angles to the direction in which the wave travels
16. material that scatters light
17. the material through which a wave travels
21. a copy of an object formed by reflected (or refracted) waves of light
25. the time required for one cycle, a complete motion that returns to its starting point
26. a technique for determining the distance to an object under water
27. the number of complete cycles in a given time