Game Time! Review of Waves. Supplies Needed One white board for each student One dry erase marker for each student Paper towel to erase Calculator Thinking.

Game Time!Review of

Waves

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 #1

• Identify the wave property labeled “A”

A

A

Answer: Amplitude

Question #2

• Identify the point labeled “B”

B B

Answer: Crest

Question #3

• Identify the point labeled “C”

C C

Answer: Trough

Question #4• Identify the wave property

labeled“D”

D

D

Answer: Wavelength

Question #5

• Identify “E”

E

Answer: Equilibrium position

E

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 #7

• The energy of a wave depends on its __________________.

• Answer: Amplitude

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 #10

• What is the symbol for amplitude?

• Answer: A

Question #11

• Amplitude is measured in what units?

• Answer: meters (m)

Question #12

• What is the symbol for wavelength?

• Answer: λ

Question #13

• Wavelength is measured in what units?

• Answer: meters (m)

Question #14

• What is the symbol for period?

• Answer: T

Question #15

• A period is measured in what units?

• Answer: seconds

Question #16

• What is the symbol for frequency?

• Answer: f

Question #17

• Frequency is measured in what units?

• Answer: Hertz (Hz)

Question #18

• What is the symbol for wave speed or velocity?

• Answer: v

Question #19

• Wave speed is measured in what units?

• Answer: m/s

Question #20

• What equation relates period and frequency only?

• Answer: T = 1/f or f = 1/T

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 #23

• The speed of a wave depends on the __________________.

• Answer: medium

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 #31

• Identify “B”

B B

Answer: Crest

Question #32

• Identify “E”

E

Answer: Equilibrium position

E

Question #33

• Identify “D”

D

D

Answer: Wavelength

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 #37

• The number of waves that pass a given point in 1 second.

• Answer: Frequency

Question #38

• The ___________ of a wave depends on the properties of the medium through which it is traveling.

• Answer: speed

Question #39

• What happens to the period of a wave as the frequency increases?

• Answer: decreases

Question #40

• Waves transfer _______________ without transferring matter.

• Answer: energy

Game Over!

• Count your sticks• Write how many sticks you have

on your board• Hold it up• Prizes will be awarded