15. Refers to our subjective impression about the highness or lowness of a tone
a. Sound b. pitch
c. intensity d.loudness
16. The form of energy that is produced when air molecules vibrate and move in pattern of waves
a. Sound
b. pitch c. intensity
17. The amount of energy that is transported to past in a given area of the medium at a given time
a. Sound
b. pitch
c. intensity
d. loudness
18. Which of the following is the unit of intensity?
a. dB
b. Hz
c. m/s
d. none of these
19. Which of the following is a component on how humans produce sound?
Sound quality depends on the complexity of its sound waves.
b. The nose where air pass through.
The lungs that produce sufficient air flow and air pressure
d. All of the above.
20. Which of the following does not belong to the group?
a. Amplitude b.frequency
c. wavelength d. intensity
21. All of the following are true about frequency except one.
A frequency of 10 hertz means 10 waves are passing through a given point during an interval of 1
b. Frequency can be measured in m/s.
C. Frequency is the number of waves passing through a given time.
d. A and b only.
22. Which of the following color of light have the longest wavelength with lowest frequency?
Red
b.blue
c. green
23. Which of the following color of light have the shortest wavelength with highest frequency
b. blue
c. green
dviolet
a. Red​