16. Which parameter of a wave gets affected after superposition? *
A. Wavelength
B. direction
C. amplitude
D. frequency
17. When do the amplitudes of two waves get added? *
A. When their amplitudes are the same
B. When their amplitudes are different
C. When they propagate in perpendicular directions
D. When they are propagating along the same line in the same directions
18. What kind of interference can occur between two identical waves moving in opposite directions? *
A. Constructive interference only
B. Destructive interference only
C. Both constructive and destructive interference
D. Neither constructive nor destructive interference
19. Which of the following objects will produce sound? *
A. Soft objects
B. Radio stations
C. Vibrating objects
D. Objects under pressure
20. Which of the following is NOT capable of transmitting sound? *
A. Air
B. Ice
C. seawater
D. Vacuum
21. When a sound wave travels from one place to another, what is transported? *
A. Air
B. Density
C. Energy
D. Nothing
22. Which of the following has the most effect on the speed of sound in air? *
A. Amplitude
B. Frequency
C. Wavelength
D. Temperature
23. The loudness ( or intensity ) of a sound wave is related to its __________. *
A. Duration
B. Frequency
C. Wavelength
D. amplitude
24. What will happen as the frequency of a wave increases and the speed remains constant? *
A. The wavelength increases
B. The wavelength decreases
C. The amplitude increases
D. The wave period increases
25. Energy from the sun reaches the earth through_____. *
A. Infrared waves
B. Ultraviolet waves
C. Mechanical waves
D. Electromagnetic waves
26. Which of the following is NOT correct about waves? *
A. Waves carry energy from place to place but the particles do not move with the waves
B. Waves can be classified as either electromagnetic or mechanical
C. Waves have the capacity to transmit messages
D. Waves transfer particles ( matter ) and energy
27. Which of the following statement is CORRECT? *
A. The vibrations of a transverse wave move in a direction along the direction of wave travel.
B. The vibrations of a transverse wave are in a direction perpendicular to the direction of travel.
C. The vibrations of a longitudinal wave are in a direction perpendicular to the direction of travel.
D. Longitudinal waves are also called surface waves.
28. Which of the following would most likely transmit sound best? *
A. Steel in cabinet
B. Water in the ocean
C. Air in your classroom
D. Water in a swimming pool
29. Which of the following will we NOT be able to hear any sound? *
A. A theater
B. A closed room
C. In a spaceship
D. In the outer space, a spaceship
30. A loud speaker in front of the room produces sound waves that pass thru the room towards you causing the air molecules in their path to _______. *
A. Move toward you in a wave
B. Vibrate vertically up and down
C. Vibrate horizontally back and forward
D. Vibrate both vertically and horizontally
31. Which of the following arrangement of media is the speed of sound increasing? *
A. Wood, water, air
B. Air, oil, ice
C. metal, alcohol, air
D. air, water, ice
32. Which is/are TRUE about sound? I. Sound is a longitudinal wave. II. The speed of sound increases with temperature. III. Human ear is sensitive to sound at 200 Hz- 20, 000 Hz IV. Sound travels faster in seawater than in freshwater *
A. I, II and III
B. I, II, and IV
C. I, III, and IV
D. I, II, III, and IV
33. What type of wave is produced when the particles of the medium are vibrating to and from in the same direction of wave propagation? *
A. Longitudinal wave
B. Sound wave
C. standing wave
D. transverse wave
34. If the energy in a longitudinal wave travels from south to north, the particles of the medium _. *
A. Move from north to south only
B. Vibrate both north and south
C. Move from east to west only
D. Vibrate both east and west
35. The main factor which affects the speed of a sound wave is the . *
A. Amplitude of the sound wave
B. Intensity of the sound wave
C. Loudness of the sound wave
D. Properties of the medium
36. As wave travels into a medium in which its speed increases, its wavelength . *
A. Decreases
B. increases
C. remains the same
37. The________ is defined as the number of cycles of a periodic wave occurring per unit time. *
A. Wavelength
B. Period
C. Amplitude
D. Frequency
38. Which of the following factors determines the pitch of a sound? *
A. The amplitude of the sound wave
B. The distance of the sound wave from the source
C. The frequency of the sound wave
D. The phrase of different parts of the sound wave
39. As two or more wave pass simultaneously through the same region,___can occur. *
A. Refraction
B. Diffraction
C. Interference
D. Reflection
40. Which of the following best describes a high frequency sound? *
A. It has low pitch
B. It has high pitch
C. It has higher pitch
D. It has lower then higher pitch​