Waves & Sound
Questions Packet
Name:_____________________
Teacher:________________
Period:_____________
Name: __________________________
Date: __________________________
Period: ________________________
Waves
The questions that follow all relate to different portions of the waves and sound unit. You should answer
these questions as we progress through the unit, as this will be a good study tool for your quiz and test.
Wave Properties Review:
A.
B.
C.
D.
_____ 1) Which wave has the greatest frequency?
_____ 2) Which wave has the greatest amplitude?
_____ 3) Which wave has the greatest wavelength?
_____ 4) Which wave has the lowest frequency?
Wave Practice and Wave Velocity
Question Set 1:
For questions 1-3, refer to the diagram above.
1) For this standing wave, what is the amplitude? (in meters)
2) For this standing wave, what is the wavelength?
3) How many nodes does this standing wave have?
4) A set of train cars are each 10 meters long, and 2 of them pass you each second, how fast is the train
moving?
5) A wave has a wavelength of 5m, and 10 of them pass you each second, what is the velocity?
Question Set 2:
1) A pulse is sent along a slinky with a velocity of 0.5m/s. You measure the wavelength as 0.8m. How long
does it take the pulse to pass a specific point?
A hummingbird flaps its wings 40 times a second. (The speed of sound is approximately 340 m/s)
2) What is the period of the flaps?
3) What is the wavelength of the sound of its flapping wings?
4) If the two waves to the right are combined, what will the resulting wave look like?
5) If the two waves to the right are combined, what will the resulting wave look like?
Changing the Speed of Sound
Speed of Sound and Distance:
1) If there is a 5 second delay between when you notice a little lightening, and then hear the thunder,
how many miles away is the storm?
Speed of Sound and Temperature:
1) A desert planet has a temperature of noontime temperature of 500C. What is the speed of sound at
this time?
2) Ice Planet Hoth has an average temperature: -30 0C. What is the speed of sound at this temperature?
3) If the speed of sound is measured to be 353.8 m/s, what is the temperature inside an incubator?
Speed of Sound and Medium:
1) Sound waves travel the slowest in air, faster in liquid, and fastest in solids. So if the velocity of sound
increases underwater, what part of the wave is altered?
a) frequency
c) both
b) wavelength
d) neither
Calculating Beats
Beat Frequency:
1) TWO TONES are heard, one has a Period of 1/500th a second, the other a Frequency of 505Hz. What is
the frequency of the Beat?
2) Attempting to tune a piano, you use a 256 Hz tuning fork and tap a key. You hear a beat frequency of 2
Hz. What is the frequency of the piano key?
a)
b)
c)
d)
254 hz
258 hz
Both 254 & 258 hz
Not enough info