waves
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 is power? | Power is the rate at which work is done.
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| What is Force? | Force is a push or pull exerted on an object in order to change the motion of the object.
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| What is work? | Work is the use of force to move an object some distance.
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| What is a wave? | A wave is the vibration in a medium.
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| What is a medium? | A medium is what a wave travels through. (Solid, liquid, or gas)
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| What is a crest? | A crest is the points were a wave is the highest.
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| What is a trough? | A troughs is the points were the wave is the lowest
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| What is a longitudinal wave? | A longitudinal wave is a wave were the particles move back and forth in the same direction that the wave travels.
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| What is compression? | Compression is were a section of the waves is closer together.
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| What is rarefaction? | Rarefaction is the section of a wave were it is farther apart.
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| What is a transverse wave? | A transverse wave is when particles move perpendicular to the direction the wave travels.
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| What are mechanical waves? | A mechanical wave is a wave that requires a medium.
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| What are electromagnetic waves? | Electromagnetic waves are vibrations of electric and magnetic fields and don't require a medium.
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| What is amplitude? | Amplitude is the measure of how far particles in the medium move from there rest position.
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| What is wavelength? | Wavelength is the distance from any point on a wave to the next identical point.
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| What is frequency? | Frequency is the number of waves that pass a point in a given amount of time.
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| What is a hertz? | A hertz is one wavelength per second.
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| What is wave speed? | Wave speed is the speed that waves travel.
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| Calculate the power: W= 342 j T= 45 sec. P= ? | P= work divided by time
P= 342 divided by 45
P= 7.6 watts
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| Calculate the work: W= ? F= 447 newtons D= 39 meters | W= force times distance
W= 447 times 39
W= 17,433 joules
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| Give 4 examples of mechanical waves. | 1. music
2. vocal sounds
3. waving a towel
4. water waves
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| Give 4 examples of electromagnetic waves. | 1. sunlight
2. microwaves
3. visible light
4. x-rays
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| How do you measure the wavelength of a transverse wave? | You would measure from crest to crest or trough to trough.
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| How would you measure the wavelength of a longitudinal wave? | You would measure from compression to crest or rarefaction to trough.
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| What is a longitudinal wave? | A longitudinal wave is when particles of the medium move up and down compared to the direction the wave is moving.
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| what is a transverse wave? | A transverse wave is when particles of the medium move perpendicularly compared to the direction the wave is moving.
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Created by:
hannah2937
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