Science Quarterly III Waves

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npage
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208503
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Science Quarterly III Waves
Updated:
2013-04-11 09:11:51
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waves
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waves
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  1. A material that reflects or absorbs any light that strikes it?
    opaque
  2. Frosted glass and wax paper are examples of what type of material?
    translucent
  3. What happens when parallel rays of light hit a smooth surface?
    Regular Reflection
  4. When the surface of a mirror curves inward, like the inside of a bowl, it is called a?
    concave mirror
  5. The bending of light rays as they enter a new medium at an angle
    refraction
  6. How would a strawberry look under a blue light?
    Black because there is no red light for the fruit to reflect or green light for teh leaves to reflect
  7. What are the primary colors of pigments?
    Magenta, Cyan, Yellow
  8. What are the primary colors of light?
    Red, blue, green
  9. Colored substances used to color other materials are called?
    pigments
  10. The colored part of the eye that controls the size of the pupil......
    iris
  11. The signals generated by the rods and cones are carried to your brain by the
    optic nerve
  12. A person who is nearsighted has an eyeball that is?
    too long
  13. Farsightedness can be corrected using
    convex lenses
  14. What does it mean to be nearsighted?
    A person can see nearby objects clearly.  Far objects appear blurry.
  15. What occurs when parallel rays of light hit a rough or bumpy surface?
    diffuse reflection
  16. What is the tranpsarent surface of the eye called?
    Cornea
  17. What are the two types of cells found on the retina?
    rods and cones
  18. What type of eye cell allows us to see color?
    cones
  19. What do you call the spot on the retina that doesn't have either rods or cones?
    Blind spot
  20. An opaque material gets its color from the light it?
    reflects
  21. Tranpsarent and translucent materials get their color from the light they?
    transmit
  22. Which waves have some electrical properties and some magnetic properties?
    electromagnetic waves
  23. Electromagnetic waves can transfer energy without a what?
    medium
  24. The range of the electromagnetic waves placed in a certain order is called the?
    Electromagnetic spectrum
  25. The electromagnetic waves with the highest frequency are?
    Gamma rays
  26. What type of wave does a police officer use when he uses a radar?
    radio waves
  27. What kind of waves do cell phones use to transmit and receive signals?
    microwaves
  28. What type of energy is transferrd by electromagnetic waves
    electromagnetic radiation
  29. What do you call images created by an infrared camera?
    Thermogram
  30. What vitamin do uv rays help your body produce?
    Vitamin D
  31. Which electromagnetic waves have the longest wavelengths and the lowest frequencies?
    radio waves
  32. What part of the electromagnetic spectrum can we see?
    visible light
  33. A flat sheet of glass with a silver-colored coating on one side is a....
    mirror
  34. Clear glass, water, and air are examples of what kind of material?
    transparent
  35. Sound is a disturbance that travels through a medium as a
    longitudinal wave
  36. Name all the rays of the electomagnetic spectrum.
    • radio
    • microwaves
    • infrared
    • visible light
    • ultraviolet
    • x-rays
    • gamma rays
  37. The speed of sound depends on what 3 things
    • Temperature
    • Elasticity
    • Density
  38. The ability of  material to bounce back after being disturbed is called
    elasticity
  39. Why did Chuck Yeager fly at a high altitude to break the sound barrier?
    sound travels slower at a higher altitude because it is colder
  40. What is intensity?
    The amount of energy a sound wave carries per second through a unit area
  41. Decibels are used to measure the intensity of what?
    Loudness
  42. What is pitch?
    How high or how low a sound seems to a person
  43. What property of waves does pitch depend on?
    Frequency
  44. What is music?
    A set of tones combined in a way that is pleasing to the ear
  45. What occurs when two or more sound waves interact?
    Interference
  46. Which part of your ear do sound waves enter through?
    ear canal
  47. The fluid filled cavity in the inner ear?
    Cochlea
  48. What is the name of the system that used sound waves to detect objects under water?
    Sonar
  49. What do bats use to locate food and navigate?
    echolocation
  50. What are the pictures produced from ultrasounds called?
    sonograms
  51. Sound waves about 20,000 Hz are called?
    ultrasounds
  52. At what level can sounds damage ears?
    100 decibels
  53. The 3 basic groups of musical instruments are:
    • stringed
    • wind
    • percussion
  54. What is the amount of mass there is in a given amount of space, or volume called?
    Density
  55. In what medium does sound travel the slowest in?
    Gas
  56. Describe the functions of the three main sections of the ear
    The 3 main sections of the ear are the outer ear, middle ear, and inner ear.The outer ear's function is to funnel sound waves.  It is made of the pinna, ear canal, and eardrum.  The middle ear transfers vibrations inward.  It is made of the hammer, anvil, and stirrup.  The inner ear transmits the vibrations as a message to the brain.  It is composed of the cochlea.  The cochlea is a snail shaped structure that contains hair like structures and fluid.  This will vibrate and send messsages to the auditory nerve where the brain interprets it as sound.
  57. Frequency is measured in .....
    hertz
  58. Mechanical waves are classified on how they....
    move
  59. The interaction between two waves is called...
    interference
  60. The bending of waves due to a change in speed is called...
    refraction
  61. Waves that move the particles of the medium parallel to the direction in which the waves are traveling.....
    longitudinal
  62. the highest part of a transverse wave is the ....
    crest
  63. Mechanical waves are created when a source of energy causes a medium to ......
    vibrate
  64. A disturbance that transfers energy from place to place is called a.....
    wave
  65. What occurs when a wave enters a medium at a new angle?
    refraction
  66. What part of your ear sends messages to your brain that you've heard a sound?
    The hairlike structures in the cochlea that are attached to the nerve cells
  67. The most common cause of hearing loss....
    aging
  68. The part of a longitudinal wave that the coils are farthest apart.
    rarefactions
  69. The law of reflction states that the angle of incidence equals the angle of .....
    reflection
  70. The tightly streched membrane at the end of the ear canal.....
    eardrum
  71. An echo is what type of sound?
    reflected
  72. You can hear sounds around corners because of.....
    diffraction

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