Unit 3 (Waves And Information Transfer) Review Question Preview (ID: 55373)


Review Of Waves And Information Transfer. TEACHERS: click here for quick copy question ID numbers.

What color is formed when all the colors of light are combined?
a) white
b) brown
c) black
d)

Which is a natural source of light?
a) laptop
b) flashlight
c) lightning
d)

What is the difference between a longitudinal wave and a transverse wave?
a) the frequency of a wave
b) the direction in which the vibration occurs
c) the size of the wave
d)

True or False: Light waves can travel through a vacuum.
a) True
b) False
c)
d)

Which object will allow light to pass through it?
a) stained glass
b) safe
c) wooden door
d)

The crest of a wave is ...
a) the frequency of a wave.
b) the distance between two waves.
c) the highest point of a wave.
d)

What is a wave?
a) the intensity at which energy moves
b) a disturbance that transmits energy from one place to another
c) something that moves matter
d)

Sound waves travel at the same speed through solids, liquids, and gases.
a) True
b) False; They travel faster through a solid.
c) False; They travel faster through a liquid.
d)

Frequency is ...
a) wave height.
b) the distance between two waves.
c) the number of repetition of a wave in one second.
d)

True or False: All waves need a medium to travel.
a) True
b) False; Electromagnetic waves can travel in a vacuum.
c) False; :Mechanical waves can travel in a vacuum.
d)

Which waves can carry matter?
a) Mechanical Waves
b) none, waves carry energy
c) Transverse Waves
d)

An opaque object ...
a) allows all light to pass through it.
b) allows some light to pass through it.
c) allows no light to pass through it.
d)

Which choice below is NOT one of the seven colors of light waves?
a) yellow
b) teal
c) orange
d)

Why are codes used to relay messages?
a) They are short.
b) Everyone can understand them.
c) They can be encoded and decoded digitally and sent by waves.
d)

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