Energy Transfer in Waves
Physics ⇒ Waves and Sound
Energy Transfer in Waves starts at 8 and continues till grade 12.
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See sample questions for grade 11
A sound wave has an intensity of 0.01 W/m² at a certain point. If the distance from the source is doubled, what happens to the intensity?
A sound wave has an intensity of 0.1 W/m² at a distance of 2 m from the source. What will be the intensity at 4 m from the source?
A sound wave travels from air into water. What happens to its speed and wavelength?
A string is vibrating with a frequency of 50 Hz and a wavelength of 0.5 m. Calculate the speed of the wave.
A wave has a frequency of 10 Hz and a wavelength of 0.3 m. What is its speed?
A wave has a frequency of 20 Hz and a speed of 60 m/s. What is its wavelength?
A wave has a power of 20 W and passes through an area of 4 m². What is the intensity of the wave?
A wave has a power of 50 W and passes through an area of 10 m². What is its intensity?
A wave on a string has a frequency of 5 Hz and a wavelength of 2 m. What is the speed of the wave?
A wave transmits 100 J of energy in 5 seconds. What is the power of the wave?
Describe how energy is transferred in a sound wave traveling through air.
Describe the difference between energy transfer in mechanical and electromagnetic waves.
Describe what happens to the energy of a wave as it is absorbed by a material.
Describe what happens to the energy of a wave when it is reflected from a surface.
Explain the relationship between wave speed, frequency, and wavelength.
Explain why a louder sound has more energy than a softer sound.
Explain why a wave loses energy as it travels through a medium.
Explain why energy transfer in a wave does not result in the net movement of matter.
Explain why energy transfer in a wave is more efficient in a solid than in a gas.
Explain why the intensity of a wave decreases as the distance from the source increases.
