Conceptual Review Solutions.notebook
February 25, 2014
How does a physicist usually define sound?
What is the source of all sounds?
What is the relationship between frequency and pitch?
What is the average range of a young person's hearing?
Distinguish between infrasonic and ultrasonic sound waves.
distinguish between a compression and a rarefaction
Do compressions and rarefactions travel in the same or opposite directions in a wave? Cite evidence to support your answer.
How does the paper cone of a radio loudspeaker emit sound?
Relative to solids and liquids, how does air rank as a conductor of sound?
Relative to solids and liquids, how does air rank as a conductor of sound?
What factors does the speed of sound depend upon?
What is the speed of sound in dry air at 0 degrees Celsius?
Does sound travel faster in warm air than in cold air? defend your answer
How does the speed of sound in water compare with the speed of sound in air? How does the speed in steel compare with the speed in air
What is the cause of refraction?
Does sound tend to bend upward or downward when its speed is less near the ground?
Why does sound sometimes refract under water?
There is a difference between the way we passively see our surroundings in daylight and the way we actively probe our surroundings with a searchlight in darkness. Which of these ways of perceiving our surroundings is more like the way a dolphin perceives its environment?
Give at least two factors that determine the natural frequency of an object.
Does a blob of putty have a natural frequency? Explain
Distinguish between forced vibrations and resonance?
What is required to make an object resonate?
When you listen to a radio, why do you hear only one station at a time instead of hearing all stations at once?
Why do troops "break step" when crossing a bridge?
What physical phenomenon underlies the production of beats?
What beat frequency will be heard when a 370­Hz and a 374­ Hz tuning fork are sounded together?
How is the phenomenon of beats useful for tuning musical instruments?
Distinguish between a carrier wave and a sound wave.
Distinguish between AM and FM
How is tuning a radio like adjusting a pair of tuning forks for resonance?
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