Worksheet Vibration, Wave, and Sound
A. Multiple Choice (Score 4)
Look at the picture below for number 1-3.
1. One vibration of the pendulum is shown by the trajectory of the points…
a. A-B-C-B b. C-B-A c. B-C-B-A-B d. A-B-C
2. ¾ vibration of the pendulum is shown by the trajectory of the points…
a. C-B-A b. C-B-A-B c. A-B-C d. A-B-C-B-A
3. Based on the picture, amplitude is shown by the numbered distance…
a. A-B b. A-C c. A-D d. O-B
4. An example of longitudinal waves is…
a. Water waves b. Light waves c. Rope waves d. Sound waves
5. Below are the examples of electromagnetic waves, except…
a. String waves b. Microwaves c. Radio waves d. UV waves
6. The following animals that can hear ultrasonic are…
a. Whales b. Alligators c. Dogs d. Bats
7. The following are examples of transverse waves…
a. Sound waves propagating in air b. Pressure wave during an earthquake c. Waves propagating on a telephone string d. Electromagnetic waves from sunlight 8. Longitudinal waves are characterized by…
a. The directions of vibration that are perpendicular to the direction of propagation
b. The direction of vibration that coincides with the direction of propagation
c. Irregular vibration direction with propagation direction d. Vibrations that do not propagate
9. An object is said to vibrate when…
a. Swing around
b. Moving back and forth through the equilibrium point c. Moving in circles
d. Moving up and down
10. The time it takes to go through one vibration is called…
a. Amplitude b. Frequency c. Period d. Wavelength
11. The amount of the vibration period of an object is not affected by…
a. Amplitude
b. Number of vibrations c. Times
d. Frequency
12. The unit used to represent frequency is…
a. Second b. Percent c. Meter d. Hertz
13. On the surface of the water where the stone is dropped, waves will form. The type of wave formed is…
a. Transverse waves b. Longitudinal waves c. Electromagnetic waves d. Mechanic waves
14. Based on the medium of propagation, waves can be classified into…
a. Transverse waves and longitudinal waves b. Sound waves and light waves
c. Mechanic waves and electromagnetic waves d. Earth waves and sea waves
15. The pitch depends upon…
a. Amplitude b. Frequency c. Medium
d. Vibration’s number B. Essay (Score 10)
1. In 0.001 second there are 10 vibrations. What is the frequency and period of these vibrations?
2. A wave travels 120 m in 3 seconds. If the frequency of the wave is 100 Hz, what is the wavelength?
3. The time taken for 5 waves to propagate is 2 seconds. The waves travel at 200 m/s. What is the wavelength?
4. Five seconds after the light, the bomb explosion is heard. If the speed of propagation of light is 320 m/s, what is the distance between the observer and the place where the bomb exploded?
Good Luck!
