30 Week Assessment Review

Guider

2. When the frequency of wave increases, what happens to the wavelength?

3. What happens to a sound when you increase the…

frequency amplitude

4. What happens to light when you increase the…

frequency amplitude

5. Identify each of the following as longitudinal or transverse

sound light water

5.5 Water is a transverse wave. If you are in a boat, the energy travels ________ , whereas the medium travels __________

(horizontal / vertical)

6. The frequency of a wave is 20 Hz. What is its period?(show your work)

7. A sound wave moves at 343 m/s and has a frequency of 500.0 Hz. What is its wavelength?

(show your work)

8. When a waves undergoes reflection, the angle of incidence is equal to

_______________

9. Why does a wave refract when it passes from one medium to another?

9.1 When a wave refracts, what does it do?

9.5. Why might a wave change speed?

10. a. A pipe organ maker is attempting to build a tube that will produce a tone with a frequency of 342 Hz.

What is the wavelength of this tone? (show your work)

10. b. What length of pipe must the organ maker use to produce this tone in the first harmonic?

(show your work)

11. An observer receives sound of frequency 436 Hz from a train moving at 18 m/s directly towards her. What is the emitted

frequency that the train conductor would hear?(show work)

12. a. What happens to this wave’s frequency?b. What happens to its amplitude?

Draw a wave that increases in frequency

12. c. How would this sound’s pitch change?d. How would its volume change?

13. a. What is this wave’s amplitude?b. What is this wave’s wavelength?

c. What is this wave’s period?

13. d. What is the wave’s frequency?e. What is the wave’s speed?

(show work for both)

14. Copy this standing wave onto your board. a. Draw arrows above the picture pointing to the antinodes

b. Draw arrows below the picture pointing to the nodes

14. Copy this standing wave onto your board. c. Would this wave occur in a string or a tube instrument?

b. The length of this instrument is 0.85m. If the harmonic is 4, what is the wavelength of the sound produced? (show work)

15. a. Draw the wave interference pattern for these two waves.

b. If they were sound, describe what you would hear during interference and why.

16. A ray of light is directed towards a pond. Upon meeting the surface, some of that light is reflection, and some is refracted. The indexes of refraction for air and water are 1.00 and 1.33

respectively. If the angle of incidence of this light ray is 55.4. a. What is the angle of reflection off the surface of the water?

16. A ray of light is directed towards a pond. Upon meeting the surface, some of that light is reflection, and some is refracted. The indexes of refraction for air and water are 1.00 and 1.33

respectively. If the angle of incidence of this light ray is 55.4. a. What is the angle of refraction of the light that enters the pond? (show work)

17. a. An ambulance emits a siren at a frequency of 2080 Hz. Suppose you are waiting at the bus stop, and an ambulance comes speeding down the street towards you at 25.0 m/s. What frequency will you hear as the ambulance approaches? (show work)

17. b. An ambulance emits a siren at a frequency of 2080 Hz. Suppose you are waiting at the bus stop, and an ambulance comes speeding down the street towards you at

25.0 m/s. After the ambulance has passed, what frequency will you hear? (show work)

18. If a longitudinal wave is transferring energy to the right, the medium must be oscillating in what two directions?