1. the ______Of a Wave Is Determined by the Rate at Which the Source Produces the Wave

A. Wave Terminology

1. The ______of a wave is determined by the rate at which the source produces the wave. 2. Waves that require a medium are ______waves. 3. The ______of a wave is determined by the amount of energy that the wave carries. 4. The particles vibrate parallel to the direction of energy transmission in ______waves. 5. The time required for one complete cycle is called the ______. 6. The particles vibrate perpendicular to the direction of energy transmission in ______waves. 7. The ______of a wave is determined by the material through which it travels. 8. Sound waves are an example of ______and ______waves. 9. Use the diagram below to identify amplitude and wavelength.

10. The ______is a group of transverse waves that can travel through a vacuum.

1. frequency 2. mechanical 3. amplitude 4. longitudina 5. period l 6. transverse 7. speed 8. longitudina 9. amplitude 10. Elcectr l; (D) o- mechanical wavelength magnet (A) ic Spectru m B. Wave Types

____ 1. waves that require a medium A) longitudinal waves ____ 2. particles vibrate perpendicular to direction of energy transfer ____ 3. B) mechanical waves

C) electromagnetic waves ____ 4. waves that do not require a medium D) transverse waves ____ 5. particles vibrate parallel to the direction of energy transfer

____ 6. sound waves

____ 7. light waves

____ 8. water waves

____ 9.

1. A/B 2. D 3. D 4. C 5. A 6. A/B 7. D/C 8. D/B 9. A

C. Wave Parts

______10.

______11.

______12.

______13.

______14.

______15. 10. Compression 11. Crest 12. Amplitude 13. Rarefaction 14. Wavelength 15. Trough

D. Wave Motion

1. A fisherman notices that wave crests pass the bow of his boat every 3.0 s. He measures the distance between two consecutive crests to be 7.5 meters. How fast are the waves traveling?

2. A particular sound wave in air has a frequency of 262 hertz and travels at 330 m/s. How far apart are the compressions of this sound wave?

3. Calculate the wavelength of a radio wave that has a frequency of 108 MHz. (Note: All electromagnetic waves travel at the speed of light)

4. A sonar signal (sound wave) is sent from a ship at the water’s surface to ocean floor below. The speed of sound in water is 1400 m/s. The reflected signal is detected 3.00 s later. How deep is the ocean beneath the ship?

5. What is the wavelength of a 10 MHz ultrasonic sound wave traveling through air on a day when the temperature is 20oC and the speed of sound is 343 m/s?

6. Determine the wavelength of a 5,000 Hz sound wave traveling along an iron rod. (Speed of sound in iron is 3581 m/s.)

7. On a day when the temperature is 20oC the speed of sound in air is 343 m/s. A hiker determines the length of a lake by listening for her echo of a shout that is reflected off a rock cliff at the far end of the lake. She hears her echo 2.5 s after shouting. Estimate the length of the lake. 8. A fishing boat is floating directly above a school of tuna on a foggy day. About 1.5 km away, an engine on another boat backfires. If air temperature is 25oC, what is the time difference between the tuna hearing the backfire and the fisherman on the boat above the tuna hearing the backfire? (Speed of sound in sea water 1396 m/s.) 9. Your buddy Ken is standing 540 m away from you along a concrete sidewalk. Ken drops a stone on the sidewalk. A moment later you hear two sounds: one travels through air the other through concrete, what is the time difference between the two sounds? (Speed of sound in air is 343 m/s and in concrete is 2949 m/s.) 10. Two wave pulses on a string approach one another at the time as shown in the figure below. Each pulse moves with a speed of 1.0 m/s. Make a careful sketch of the resultant wave at the times 2.0 s, 2.5 s, 3.0 s, and 4.0 s, assuming that the superposition principle holds for these waves.

11. Two wave pulses on a string approach one another at the time as shown in the figure below. Each pulse moves with a speed of 1.0 m/s. Make a careful sketch of the resultant wave at the times 2.0 s, 2.5 s, 3.0 s, and 4.0 s, assuming that the superposition principle holds for these waves.

1. 2.5 m/s 2. 1.26 m 3. 2.78 m 4. 2100m 5. 3.43 x 10-5 m 6. 0.7162 m 7. 428.2 m 8. 3.261 s 9. 1.391 s 10. see diagram below 11. see diagram below

10 11 12. Two waves, A and B, travel in the same direction in the same medium in the same time.

13. Two waves, A and B, travel in the same direction in the same medium in the same time.

a. Assume the wave pattern drawn for each wave occurs in 2.5 seconds. What is the frequency of each wave? b. What is the speed of each wave? c. On the grid below, draw the resultant wave produced by the superposition of waves A and B.

d. What is the maximum amplitude of the resultant wave? e. What is the wavelength of the resultant wave? )