unit 9 wave review
TRANSCRIPT
![Page 1: Unit 9 Wave Review](https://reader036.vdocuments.us/reader036/viewer/2022062319/5557432ad8b42a63448b476b/html5/thumbnails/1.jpg)
Game Time!Review of
Waves
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Supplies Needed
• One white board for each student• One dry erase marker for each
student• Paper towel to erase• Calculator• Thinking caps!
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Directions
• Each question will be for all students to answer
• Write your answer on your white board
• Turn it over• Hold up your board when asked• Only the first answer counts
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Directions
• For each correct answer you will get a popsicle stick
• The 3 people with the most sticks at the end of the game get prizes• 1st – Grand prize• 2nd – Candy (3 pieces)• 3rd – Candy (2 pieces)
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Question #1
• Identify the wave property labeled “A”
A
A
Answer: Amplitude
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Question #2
• Identify the point labeled “B”
B B
Answer: Crest
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Question #3
• Identify the point labeled “C”
C C
Answer: Trough
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Question #4• Identify the wave property
labeled“D”
D
D
Answer: Wavelength
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Question #5
• Identify “E”
E
Answer: Equilibrium position
E
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Question #6
• The primary difference between an electromagnetic wave and a mechanical wave is that a(n) _____________ wave can travel through empty space while the other can not.
• Answer: electromagnetic
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Question #7
• The energy of a wave depends on its __________________.
• Answer: Amplitude
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Question #8
• In a _________________ wave, the medium vibrates vertically while the wave travels horizontally.
• Answer: Transverse
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Question #9
• In a __________________ wave, the medium moves back and forth while the wave moves horizontally.
• Answer: Longitudinal or Compressional
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Question #10
• What is the symbol for amplitude?
• Answer: A
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Question #11
• Amplitude is measured in what units?
• Answer: meters (m)
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Question #12
• What is the symbol for wavelength?
• Answer: λ
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Question #13
• Wavelength is measured in what units?
• Answer: meters (m)
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Question #14
• What is the symbol for period?
• Answer: T
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Question #15
• A period is measured in what units?
• Answer: seconds
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Question #16
• What is the symbol for frequency?
• Answer: f
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Question #17
• Frequency is measured in what units?
• Answer: Hertz (Hz)
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Question #18
• What is the symbol for wave speed or velocity?
• Answer: v
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Question #19
• Wave speed is measured in what units?
• Answer: m/s
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Question #20
• What equation relates period and frequency only?
• Answer: T = 1/f or f = 1/T
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Question #21
• In a _______________ wave, the displacement of the particles in the medium is perpendicular to the direction of the wave propagation.
• Answer: Transverse
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Question #22
• What equation can we use to find wave speed if we have wavelength and period?
• Answer: v = λ/T
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Question #23
• The speed of a wave depends on the __________________.
• Answer: medium
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Question #24
• In a __________________ wave, the displacement of the particles of the medium is parallel to the direction of the wave propagation.
• Answer: Longitudinal or Compressional
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Question #25
• Wave _____________ (frequency or velocity) is the number of vibrations per second of a part of the medium
• Answer: frequency
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Question #26
• As the wavelength of a wave increases, the frequency of the wave ________________.
• Answer: decreases
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Question #27
• The frequency of a certain color of light is 4.2 x 1014 Hz. The speed of light is 3.0 x 108 m/s. Find its wavelength.
• Hint: v = fλ• Answer: 7.14 x10-7 m
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Question #28
• A wave has a period of 12.0 s.
• What is the frequency?• Hint: f = 1/T• Answer: 0.083 Hz
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Question #29
• The distance between a crest and the adjacent trough is 2.00 m.
• What is the wavelength?• Hint: Measured crest to crest• Answer: 4.00 m
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Question #30
• A wave has a period of 12.0 s. The distance between a crest and the adjacent trough is 2.00 m. (f = 0.083 Hz and λ = 4.00 m)
• What is the velocity?• Hint: v = λ/T or v = f λ• Answer: 0.33 m/s
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Question #31
• Identify “B”
B B
Answer: Crest
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Question #32
• Identify “E”
E
Answer: Equilibrium position
E
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Question #33
• Identify “D”
D
D
Answer: Wavelength
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Question #34
• An ocean wave has a length of 10.0 m. A wave passes a fixed location every 2.0 s. What is the speed of the wave?
• Hint: v = λ/T• Answer: 5.0 m/s
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Question #35
• A ________________ wave has properties of both a transverse and longitudinal wave.
• Answer: Surface
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Question #36
• The shortest time interval during which the motion of a wave repeats itself.
• Answer: Period
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Question #37
• The number of waves that pass a given point in 1 second.
• Answer: Frequency
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Question #38
• The ___________ of a wave depends on the properties of the medium through which it is traveling.
• Answer: speed
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Question #39
• What happens to the period of a wave as the frequency increases?
• Answer: decreases
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Question #40
• Waves transfer _______________ without transferring matter.
• Answer: energy
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Game Over!
• Count your sticks• Write how many sticks you have
on your board• Hold it up• Prizes will be awarded