A student looked up the speed of sound for several different media and noticed a pattern - it was fastest in solids and slowest in gases. Which of the following statements is the correct reason for this?
0%
The particles of solids are denser than gases
0%
The particles of solids are less dense than gases
0%
The particles of solids are further apart than in gases
0%
The particles of solids are closer together than in gases
Q.2.
Sound of a short wavelength makes what kind of noise?
0%
High pitch
0%
Low pitch
0%
High volume
0%
Low volume
Q.3.
Which of the following pieces of equipment is required to a sound wave?
0%
Cathode-ray oscilloscope (CRO)
0%
Ripple tank
0%
Microphone
0%
Loudspeaker
Q.4.
Sound waves diffract. What does this mean?
0%
As they pass an object or go through a gap that is approximately the same size or less than their wavelength, they spread out
0%
As they pass an object or go through a gap that is considerably smaller than their wavelength, they spread out
0%
As they pass an object or go through a gap that is much bigger than their wavelength, they spread out
0%
As they pass an object or go through a gap that is approximately the same size as their wavelength, they come together and get louder
Q.5.
If you count the seconds between a flash of lightning and the rumble of thunder, then divide the time by three, you get the approximate distance in kilometers to the lightning. Why do you divide by three?
0%
Sound travels at 330 m/s
0%
Sound travels three times faster than light
0%
Sound travels at 3,000 m/s
0%
Light travels three times faster than sound
Q.6.
Which of the following statements is true of an echo?
0%
An echo is someone in the distance repeating what you say
0%
An echo is only heard by the person who created it
0%
An echo is as loud as the original sound
0%
An echo is a sound wave that has been reflected
Q.7.
The Apollo mission astronauts on the surface of the Moon needed radios to talk to each other, even when they were standing beside one another. Why?
0%
Spacesuit material is too thick to hear through
0%
There is no atmosphere on the Moon
0%
The Moon is too noisy to allow a normal conversation
0%
The Moon has less gravity than Earth
Q.8.
Using an oscilloscope, if you heard two waves of identical pitch but one was louder than the other, what would you see?
0%
The crests of the louder wave would be closer together
0%
The crests of the louder wave would be taller
0%
The crests of the louder wave would be further apart
0%
The crests of the louder wave would be shorter
Q.9.
As a sound wave passes, the particles of the medium are alternately compressed and uncompressed. Areas where the particles are compressed are called what?
0%
Decompressions
0%
Rarefactions
0%
Satisfactions
0%
Benefactions
Q.10.
Sound is a longitudinal wave. This means that the vibrations travel in which direction?
0%
At 90 degrees to the direction of the wave
0%
At 45 degrees to the wave
0%
In the same direction as the wave
0%
In the opposite direction to the wave
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.