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A disturbance that transfers energy from place to place.
wave
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Mechanical waves are created when a source of energy causes a medium to
vibrate
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The highest part of a transverse wave.
Crest
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Waves that move the particles of the medium parallel to the direction in which the wave is moving
longitudinal
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The maximum distance that the particles of a medium move from the rest position
amplitude
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The distance between two corresponding parts of a wave
wavelength
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The speed of a wave is its wavelength multiplied by its
frequency
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How does energy move through a medium?
The particles bump into each other, passing the energy along.
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How are mechanical waves classified?
how they move
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Frequency is measured in units called
Hertz
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What kind of wave causes the particles in the medium to move to right angles to the direction the wave is moving? transverse
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The ____________ of a mechanical wave is a direct measure of its energy.
Amplitude
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What do waves transfer? Energy
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Does this tell us the distance between the two waves?
No
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How compressed or rarefied it is
What is the difference between longitudinal waves with different amplitudes? How compressed or rarefied it is
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The _______________ of a wave tells us the number of waves that are produced in a certain amount of time. Frequency
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What is the frequency if three waves pass a point every second?
3 Hz.
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What part of a longitudinal wave is this?
Compression
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Which has a shorter wavelength?
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What kind of wave carries energy through empty space?
Electromagnetic
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What is the “stuff” a wave travels through?
medium
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Which has a larger amplitude?
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What is an ocean wave’s medium?
Salt Water
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How do longitudinal waves move?
Parallel to the direction of the wave
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What part of a longitudinal wave is this?
Rarefaction
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The particles in a medium ____________________ to pass the wave’s energy along.
Bump into each other
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What is the medium for the sound waves that come from a musical instrument?
Air
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TRUE or FALSE: Although mechanical waves travel through a medium, they do not carry the medium with them. True!
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Which of these show ONE full wave?
One wave has one crest and one trough
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What are the two types of waves?
Transverse Longitudinal
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In a transverse wave, the matter in the wave moves _____________________.
perpendicular to the wave's direction
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What is the speed of the wave below?
Wave speed = wavelength x frequency Wavelength – 3 inches Wave Speed = 24 inches/second Frequency – 8 Hz. (8 waves pass every second)
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How do you find the wavelength of a longitudinal wave?
Measure from compression to compression or rarefaction to rarefaction.
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Transverse waves create points called _________ and __________ or high and low points in the waves movement. Crest Trough
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What part of a wave do these arrows show?
Amplitude Resting Position
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What is an example of a longitudinal wave?
Sound
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Which of these have a lower amplitude?
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What is an example of a transverse wave?
the ocean
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What is a vibration? Up and down/ back and forth motion
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Can the medium a wave passes through affect the wave’s speed?
Yes!
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What part of a wave are these arrows showing?
Wavelength
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____________ waves are waves that need a medium to travel through.
Mechanical
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What is the frequency if six waves pass a point every three seconds?
2 Hz.
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What part of a longitudinal wave is shown?
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Parts where the coils in a longitudinal waves are spread out.
Rarefaction
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Which has a higher frequency?
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Parts where the coils in a longitudinal waves are close together.
Compression
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