Across
- 3. a force that squeezes something together
- 6. a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each
- 7. a reflection such that the angle of reflection of the light is equal to the angle of incidence and on the opposite side of the normal to the point of incidence
- 9. a wave that is an oscillation of matter, and therefore transfers energy through a medium
- 10. the fraction of a period
- 13. a property applying to transverse waves that specifies that geometrical orientation of the oscillations
- 15. the spreading of waves around obstacles
- 20. the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position
- 21. Light: the apparent difference between the frequency at which light waves leave a source and that at which they reach an observer, caused by relative motion of the observer and the wave source
- 23. the time for a particle on a medium to make one complete vibrational cycle
- 24. light that has the same wavelength so it is one color
- 25. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
- 26. a region of maximum amplitude situated between adjacent nodes in a vibrating body
- 27. the highest surface part of a wave
- 30. the angle made by a reflected ray with a perpendicular to the reflecting surface
- 31. when a wave is not confined to a given space along the medium
- 32. the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force is equal or close to a natural frequency of the system on which it acts
- 34. when two or more waves overlap in space, the resultant disturbance is equal to the algebraic sum of the individual disturbances
- 40. a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction
- 42. the pulsation caused by the combination of two waves of slightly different frequencies
- 43. the apparent difference between the frequency at which sound waves leave a source and that at which they reach an observer, caused by relative motion of the observer and the wave source
- 44. wave movement
- 45. the incident ray bouncing back in the same medium after striking the reflecting surface
Down
- 1. the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies
- 2. the number of waves that pass a fixed point in unit time
- 4. the measure of the bending of a ray of light when passing from one medium into another
- 5. the regular variation in magnitude or position around a central point
- 8. a substance or material that carries the wave
- 11. when two waves of identical wavelength are in phase, they form a new wave with an amplitude equal to the sum of their individual amplitudes
- 12. when light falls upon a plane surface it is so reflected that the angle of reflection is equal to the angle of incidence and that the incident ray, reflected ray, and normal ray all lie in the plane of incidence
- 14. the net effect of the combination of two or wave trains moving on intersecting of coincident paths
- 16. a wave that oscillates in time but whose peak amplitude profile does not move in space
- 17. the angle between the normal and the ray of the light
- 18. wave a wave with a repeating continuous pattern which determines its wavelength and frequency
- 19. the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection
- 22. a wave vibrating in the direction of propagation
- 28. the point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position
- 29. an abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums
- 33. a point along a standing wave where the wave has minimum amplitude
- 35. a decrease in the density of something
- 36. a single disturbance that moves through a transmission medium
- 37. the sensation of a frequency
- 38. the change in direction of a wave passing from one medium to another caused by its change in speed
- 39. a rectilinear ray of light that strikes a surface
- 41. a wave whose oscillations are perpendicular to the direction of the wave's advance