Name: ______Period: ______
Basic Waves Test Review
Important Notes:
· Pages in your NB with information about this test are from pg. 54-63
· This review will count for 5 bonus points on your test grade!
· To get the full extra credit amount you MUST SHOW ALL WORK for math problems! Just writing down the answer will NOT get you any points!
· Review is due BEFORE the test begins! No late submissions will be accepted!
Term / Symbol(in equation) / Unit (after #)
Frequency
Period
Time
Wave Speed
Velocity
Wavelength
Distance
Amplitude
1. If a wave in the ocean has a frequency of 240 Hz and a wavelength of 2 m, then what is the speed of this wave?
2. A hiker in a canyon calls out, “Hello,” and hears her echo back in 6 s. If the speed of sound is 343 m/s and her voice is at a frequency of 240 Hz, then how far away is the canyon wall?
3. An electromagnetic wave traveling at 3 × 108m/s has a 0.89m wavelength. What is the frequency of this wave?
4. Determine whether the amplitude & wavelength for each wave below is high/big or low/small.
5. When astronauts are outside of a spacecraft on a spacewalk, why do they use headphones and microphones to communicate with each other?
6. Two waves overlap each other such that the combined amplitude is smaller than the amplitude of either wave. This is a good example of:
7. Compare transverse & longitudinal waves.
8. Two waves of the same frequency and wavelength interfere with each other. The first wave has amplitudeA1= 23 cm and wavelengthλ1= 2 m. The second wave has amplitudeA2= 30 cm and wavelengthλ2= 2 m. What is the amplitude of the sum of the two waves if the waves are 180° out of phase?
9. A sound wave has a frequency of 540 Hz. What is the period of this wave?
10. Two waves of the same frequency and wavelength interfere with each other. The first wave has amplitudeA1= 49 cm and wavelengthλ1= 4 m. The second wave has amplitudeA2= 55 cm and wavelengthλ2= 4 m. What is the amplitude of the sum of the two waves if the waves are exactly in phase?
11. What characteristics are associated withhigh energyfor a wave?
12. Two scientists set up an experiment to measure the speed of sound through a metal. If they measured the frequency of the sound to be 800Hz and the wavelength to be 3m, what is the speed of sound in the metal?
13. The frequency spectrum of a certain wave shows a single peak at 430 Hz. What would be the period of the wave as shown on its waveform?
14. A sound wave moving through a medium different from air has a wavelength of 1.9 m and a speed of 250 m/s. What is the frequency of the sound wave?
15. A hiker in a large canyon calls out the word “Hi” and hears the echo 3s later. How far away from the canyon wall is he? (Assume that the speed of sound in air is 340m/s.)
16. What is the wavelength of a sound waves traveling at 343 m/s with a period of 0.049 s?
17. Rank the following from smallest wavelength to biggest wavelength.
18. When a bell is rung by striking it with a metal rod, what direction do the sound waves produced by the bell move?
19. An ocean buoy moves up-and-down once every 5 seconds due to passing water waves. What is the wavelength of the waves if their speed is 6 m/s?
20. What could you do to a wave to increase its energy?
21. What is the wavelength of the wave in the graph?
22. Two sound waves combine to create a louder sound than either of them individually. What is this a good example of?
23. For the 2 waves below, draw a wave that is 180o out of phase.
24. What are some terms that can be used to describe a wave?
25. What are the 3 main types of boundary behavior/interactions we learned about?
26. What’s an example of a real-world way each of the 3 types of boundary behavior are used?
27. If a wave has a frequency of 170 Hz and a wavelength of 2.00 m, then what is the speed of this wave?
28. For reflection……
a. What happens?
b. Direction: changes stays the same
c. Shape: changes stays the same both can occur
d. Wavelength: changes stays the same
e. Wave Speed: changes stays the same
29. For refraction……
a. What happens?
b. Direction: changes stays the same
c. Shape: changes stays the same both can occur
d. Wavelength: changes stays the same
e. Wave Speed: changes stays the same
30. For diffraction……
a. What happens?
b. Direction: changes stays the same
c. Shape: changes stays the same both can occur
d. Wavelength: changes stays the same
e. Wave Speed: changes stays the same
31. For each of the following pictures specify if its an example of: refraction, absorption, reflection or diffraction
32. For the wave below label/mark the Amplitude & indicate its value, label/mark the Period & indicate its value, solve for frequency.
33. For the wave below label/mark the Amplitude & indicate its value, label/mark the Wavelength & indicate its value.
34. For the following wave sets indicate:
a. Will these waves experience constructive or destructive interference?
b. Draw what the resultant wave would look like when these interfere.
35. For the following wave sets indicate:
a. Will these waves experience constructive or destructive interference?
b. Draw what the resultant wave would look like when these interfere.
36. Several positions along the medium are labeled with a letter. Categorize each labeled position along the medium as being a position where either constructive or destructive interference will occur.