Waves

Across

3. disturbance in matter that carries energy from one place to another
4. behaves sometimes like a wave and sometimes like a stream of particles
5. a description of a material that scatters light that passes through it
6. the response of a standing wave to another wave of same frequency, with dramatic increase in amplitude of the standing wave
9. the highest point of the wave above the rest position
13. a material that selectively absorbs certain colors of light and reflects other colors
14. a color-coded picture using variations in infrared radiation to show variations in temperature
15. the interaction of two or more waves that combine in a region of overlap
19. an area where the particles out more than they were in rest position
22. the emission of electrons from a metal caused by light striking the metal
23. a description of a material that either absorbs or reflects all of the light that strikes it so nothing can be seen through it
26. the full range of electromagnetic radiation
29. motion that repeats at regular time intervals
32. a point of maximum displacement midway between two nodes in a standing wave
33. an area where the particles in a medium are spaced close together
35. the frequency of a sound as a listener perceives it
37. the bending of a wave as it enters a new medium at an angle
40. a wave that travels along a surface separating two media
42. a wave that causes the medium to vibrate at right angles to vibrate at right angles to the direction in which the wave travels
43. three specific colors that can be combined in varying intensities to create millions of colors
44. frequency measured in cycles per second
45. occurs when a wave bounces off a surface that it cannot pass through
48. a wave that appears to stay in one place and does not seem to move through a medium
49. the interaction among two or more waves in which displacements combine to produce a wave with a smaller displacement

Down

1. a method of transmitting a radio signal in which the frequency of the carrier wave varies while its amplitude remains the same
2. a technique for determining the distance to an object under water
7. a method of transmitting a radio signal in which the amplitude of the carrier wave varies while its frequency remains the same
8. the interaction among two or more waves in which displacements combine to produce a wave with a larger displacement
10. a longitudinal wave consisting of compressions and rarefactions, which travels through a medium
11. a point on a standing wave that has no displacement from the rest point
12. a packet of electromagnetic energy
16. the bending of a wave as it moves around an obstacle or passes through a narrow opening
17. a transverse wave consisting of changing electric and changing magnetic fields
18. the number of complete cycles in a given time
20. of a wave is the maximum displacement of the medium from its rest position
21. time required for one cycle, a complete motion that returns to its starting point
24. the process in which white light separates into colors
25. wave in which the vibration of the medium is parallel to the direction the wave
27. new color that results when any two of the primary colors are combined
28. a description of a material that allows most of the light that strikes it to pass through
30. a change in sound frequency caused by motion of the sound source, motion of the listener, or both
31. the material through which a wave travels
34. a field in a region of space that exerts electric forces on charged particles
36. the rate at which a wave's energy flows through a given unit of area
38. lowest point below the rest position
39. distance between a point on one wave and the same point on the next cycle of the wave
41. a field in a region of space that exerts magnetic forces
46. a unit that compares the intensities of different sounds
47. a physical response to the intensity of sound, modified by physical factors