game time! review of waves. supplies needed one white board for each student one dry erase marker...
TRANSCRIPT
Supplies Needed
• One white board for each student• One dry erase marker for each
student• Paper towel to erase• Calculator• Thinking caps!
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
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)
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
Question #8
• In a _________________ wave, the medium vibrates vertically while the wave travels horizontally.
• Answer: Transverse
Question #9
• In a __________________ wave, the medium moves back and forth while the wave moves horizontally.
• Answer: Longitudinal or Compressional
Question #21
• In a _______________ wave, the displacement of the particles in the medium is perpendicular to the direction of the wave propagation.
• Answer: Transverse
Question #22
• What equation can we use to find wave speed if we have wavelength and period?
• Answer: v = λ/T
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
Question #25
• Wave _____________ (frequency or velocity) is the number of vibrations per second of a part of the medium
• Answer: frequency
Question #26
• As the wavelength of a wave increases, the frequency of the wave ________________.
• Answer: decreases
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
Question #28
• A wave has a period of 12.0 s.
• What is the frequency?• Hint: f = 1/T• Answer: 0.083 Hz
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
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
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
Question #35
• A ________________ wave has properties of both a transverse and longitudinal wave.
• Answer: Surface
Question #36
• The shortest time interval during which the motion of a wave repeats itself.
• Answer: Period
Question #38
• The ___________ of a wave depends on the properties of the medium through which it is traveling.
• Answer: speed