Ch. 25 Waves Crossword

7. the positions on a standing wave with the largest amplitudes
9. occurs when a wave source moves faster than the waves it produces
10. time of a back-and-forth swing of the pendulum
13. the crest of one wave overlaps the crest of another and their individual effects add together
14. back-and-forth vibratory motion of a swinging pendulum
20. a wave that appears to stay in one place- it does not appear to move through the medium
22. whenever the motion of the medium is at right angles to the direction in which a wave travels
24. low points on a wave
25. crests of one wave overlap the crests of the other, and the troughs overlap as well
26. a regular arrangement of places where wave effects are increased, decreased, or neutralized

1. when the particles oscillate parallel to or along the direction of the wave rather than at right angles to it
2. an increase in frequency
3. a pictorial representation of a wave
4. 3-dimensional wave that consists of overlapping spheres that form a cone
5. the apparent change in frequency due to the motion of the source
6. the crest of one wave overlaps the trough of another and their individual effects are reduced
8. the distance from the midpoint to the crest of the wave
11. crests of one wave overlap the troughs of another to produce regions of zero amplitude
12. the unit of frequency (1 cycle per second)
14. sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listeners
15. a decrease in frequency
16. the stationary points on a standing wave
17. high points on a wave
18. the distance from the crest of one wave to the crest of another wave
19. a disturbance that is transmitted progressively from one place to the next with no transport of matter
21. the number of vibrations an object makes in a unit of time
23. repeating back and forth motion about an equilibrium position