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# Waves combine so that the resulting wave is smaller

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17. waves combine so that the resulting wave is smaller than the largest of the original waves 18. is a wave form caused by interference that appears not to move along the medium and that shows nodes and antinodes

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19. a wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels 20. the highest point of a transverse wave 21. the bouncing back of a wave as it meets a surface or boundary 22. the matter through which a wave travels 23. is the time require for one full wavelength to pass a certain point 24. is defines as a wave that requires a medium 25. the bending of waves as they pass from one medium to another 26. a wave that causes the particles of the medium to vibrate parallel to the direction the wave travels 27. when two or more waves exist in the same place at the same time 28. consists of changing electric and magnetic fields and does not require a medium 29. lowest point of a transverse wave 30. the number of vibrations that occur in a 1-second time interval 31. the bending of a wave as it passes an edge or an opening
32. waves combine so that the resulting wave is bigger than the largest of the original waves 33. How does a compass indicate direction? 34. Where is Earth’s magnetic N pole located? 35. Where is Earth’s magnetic S pole located? 36. Describe the orientation of the domains inside an unmagnetized piece of iron. 37. Compare and contrast Earth’s magnetic poles with its geographic poles. 38. Holding a strong magnet next to a videotape or an audiotape usually destroys all the information on that tape. Use your knowledge of magnetism to explain why.

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