Fichas
Waves
Fichas del conjunto (13)
- 1What is the wave equation?Speed of wave= frequency + wavelength
v= f x λ - 2What do waves do?waves transfer energy from one point to another, but they do not transfer matter.
- 3What is a transverse wave?A wave in which the particles vibrate at 90' direction in which the wave is travelling. Eg water or electromagnetic waves
- 4What is a longitudinal wave?A wave which the particles vibrate parallel to the direction in which the wave is travelling. Eg sound or slinky
- 5What is amplitude?the greatest displacement of the wave from its undisturbed position measured in metres.
- 6What is Frequency?The number of complete waves passing a fixed point in one second. Measured in Hertz Hz
- 7What is wavelength?the distance between two consecutive crests or troughs given te symbol λ. measured in metres.
- 8What happens when waves travel from deep to shallow water?- the waves slow down
- the wavelength of the waves decreases
- the frequency of the waves is unchanged - 9What happens during Wave reflection?- the angle of incidence is always equal to the angle of reflection
- the wavelengths of the incident and reflected waves are equal
- there is a continuity of the incident and reflected waves at the barrier.
-the frequency's/speed of the incident and reflected waves are equal.
-the angle between a wave front and the direction is always 90' - 10What frequency can humans hear at?Between 20Hz and 20 000Hz
- 11How can hearing be damaged?1. too much earwax
2. Damage to the auditory nerve
3. illness or infection
4. old age - 12How does sound travel?sound travels through materials as a longitudinal wave as energy passes from molecule to molecule. the sound energy passes from particle to particle which is why sound can travel through a vacuum where there is no particles
- 13what is ultra sound?sound that is above a frequency of 20 000Hz and cant be heard by humans.
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- Flashcards on the topic of waves
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- Bronagh Tea
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