Physics - Music Section
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What does amplitude mean? | The maximum displacement from the undisturbed portion of the wave to the crest
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| What does frequency mean? | The number of waves per second
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| What is period? | The time it takes for one wave to pass. Can be measured from peak to peak, trough to trough
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| What is the wavelength? | The length of a wave from peak to peak, trough to trough etc.
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| Name all the types of radiotion in the electromagnetic spectrum in order from longest to shortest wavelength | Radio waves, Microwaves, Infra-Red, Visible Light, Ultra-Violet (UV) Rays, X-Rays and Gamma Rays
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| Give three uses for radio waves | Radio (music), television and mobile phone signals
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| Give 2 uses for microwaves | Satellite singals (e.g. satellite tv) and microwave ovens
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| Give 2 uses for infra-red light | Night Vision, Data transfer (e.g. mobile phones)
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| Give 2 uses of U/V light | U/V telescopes, Security Stamps
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| What is so dangerous about U/V light? | It can damage the skin and lead to skin cancer
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| What can X-Rays be used for? | Producing images of the skeleton
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| Give 2 uses for gamma rays | Sterilisation and killing cancer cells
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| What is so dangerous about gamma rays? | They can make cells mutate and therfore induce cancer
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| What is the wave equation? | Velocity = frequency x wavelength (lambda)
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| What is the diference between light and sound? | Light is a transverse wave while sound is a longitudal wave
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| Sound can be described in terms of the... | displacement of molecules
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| What are standing waves? | A wave between two points that appears to be stationary because the wave reflects and induces a phase change of 90 degrees
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| What is a wavefront? | The leading edge of a single pulse
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| What is superposition? | When two waves collide causing constructive or destructive interference
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| If two waves are coherent, they are... | of the same frequency and with a constant phase relationship
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| In a standing wave what is a node or anti-node? | A node is a point where there is no change and a anti-node is where there is maximum change (e.g. a peak or trough on a wave graph)
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| What are resonant frequencies? | Fixed frequencies at which the tube or object gives a sound at
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| What does the fundemental frequency mean? | The lowest resonant frequency that can be produced, i.e. one standing wave
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| Why do stringed instruments have sound boxes? | The string vibrating itself affects very little air (not much air is displaced). The sound box resonates with the string meaning more air is displaced so a louder sound
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| What us the wavelength of the lowest frequency? | lambda = 2l where l is the length of the string/tube
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| In a string, the greater the tension the greater the ... | speed
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| How does the mass-per-unit length of a string affect the speed | The greater the mass-per-unti length the slower the speed
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| Give the equation that relates speed, tension and mass-per-unit length | p.150 text book
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| What is phase difference? | Where waves reach their peaks and troughs at different times
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
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Created by:
Masterniket
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