Question 7
The faster the sound moves through the air, …
A) The colder the air must be.
B) The warmer the air must be.
C) The dryer the air must be.
D) The higher frequency sound it must be.
Question 8
What is the range of human hearing?
A. 5 Hz-5,000 HzB. 10 Hz - 10,000 HzC. 20 Hz - 20,000 HzD. 30 Hz - 30,000 HzE. 40 Hz - 40,000 Hz
Question 9
What is the type of wave that vibrates perpendicular to its direction of travel? Hint: light, x-rays, radio
waves fall into this category
Question 13
Which two factors affect the speed of sound?
A) frequency and period
B) amplitude and wavelength
C) air temperature and humidity
D) wavelength and elasticity
Question 14The pitch of a sound depends on which of these?
A. wavelengthB. amplitudeC. intensityD. loudnessE. frequency
Question 15
Periodic motion of an object that results from a restoring force that is proportional to
displacement is called…
Question 17When sound waves bend due to a difference
in air temperature it is called…A) reflectionB) reverberationC) echoingD) refraction
Question 18
Sound waves that are beyond the frequency range of human hearing are called _____________.
The special frequency an object has that depends on its elasticity and shape is
referred to as...
Question 21
When an object receives a sympathetic vibration from an outside source that matches its natural frequency and the object vibrates with a large amplitude
_____________ is occurring.
Question 22
If the frequency of a light wave is 6.5 x 108 MHz, and its speed is 300,000,000 m/s.
What is its wavelength?
Question 23
When two wave interfere that are in phase and the resulting wave that gets created has a larger amplitude __________ interfence has occured.
Question 25
The rhythmic pattern generated by the
interference of two waves at a similar frequency is
called…
Question 26
This is the term for the apparent change in
frequency due the motion of the source or observer.
Question 27
One vacuum cleaner makes a sound of 93 decibels. How
many decibels do four vacuum cleaners make?
Question 28
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