Term
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Definition
Red Shift is the Doppler effect in light when the object is moving away from me and there is a decrease in the frequency of the light because of the movement. |
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Term
Tell me what Blue Shift is. |
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Definition
Blue Shift is the Doppler effect in light when the object is moving toward me and there is an increase in frequency of the light because of the movement. |
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Term
The apparent change in frequency due to the motion of the source or receiver is called the ______ |
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Definition
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Term
A wiggle in time is a ______________ |
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Definition
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Term
A wiggle in time and space is a ____________ |
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Definition
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Term
The time it take a pendulum to swing back and forth is called the _____ |
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Definition
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Term
Does the period of a pendulum depend upon the mass of the pendulum? |
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Definition
NO. The period of a pendulum depends upon the length of the radius and g |
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Term
Name the two things the period of a pendulum depends upon. |
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Definition
Length of the pendulum, g |
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Term
Which as the longer period, a long pendulum or a short pendulum? |
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Definition
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Term
Back and forth vibratory motion is often called (two options) |
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Definition
Oscillatory motion, simple harmonic motion |
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Term
Name the Periodic motion in which acceleration is proportional to the distance from an equilibrium position and is directed toward that equilibrium position. |
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Definition
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Term
What are the low points in a sine curve called? |
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Definition
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Term
In a sine wave, what is the distance from the top of one crest to the top of the next crest called? |
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Definition
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Term
How often a vibration occurs is described by its _________________ |
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Definition
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Term
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Definition
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Term
AM radio waves are measured in: |
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Definition
kilohertz, 960 on the dial is 960,000 vibrations/second |
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Term
A pattern formed by the overlapping of two or more waves that arrive in a region at the same time is called _________________________ |
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Definition
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Term
When the crest of one wave overlaps the crest of another, their effects add together. This is called _____________________________ |
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Definition
constructive interference |
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Term
When the crest of one wave overlaps the trough of another, their individual effects are reduced. This is called _________________ |
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Definition
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Term
What is the term applied to two waves for which the crest of one wave arrives at a point at the same time that a trough of the second wave arrives. |
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Definition
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Term
What is the term applied to two or more waves whose crest (and troughs) arrive at a place at the same time so that their effects reinforce each other? |
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Definition
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Term
The positions on a standing wave with the largest amplitudes are known as __________________ |
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Definition
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Term
In a standing wave, certain parts of the rope remain stationary. These are called ___________ |
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Definition
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Term
A cone-shaped wave produced by an object moving at supersonic speed through a fluid is called shock wave |
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Definition
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Term
What is a curve whose shape represents the crests and troughs of a wave, as traced out by a swinging pendulum that drops a trail of sand over a moving conveyor belt? |
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Definition
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Term
A wave in which the vibration is in the ___________ direction as that in which the wave is traveling is called a longitudinal wave. |
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Definition
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Term
A shock wave is produced by overlapping spheres to form a _______. |
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Definition
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Term
Why don't we hear a sonic boom from a slower than sound aircraft? |
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Definition
because the wave crests reach our ears one at a time. |
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Term
What is the name of the sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listener? |
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Definition
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Term
Standing waves are the result of _____________________________ |
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Definition
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Term
Standing waves can be produced in either _________________ or _____________________ waves. |
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Definition
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Term
Can a boat travel faster than the speed of the water waves? |
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Definition
Yes. A boat can travel faster than a wave on the water. |
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Term
A bow wave is a _______-dimensional wave |
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Definition
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Term
A shock wave is a __________-dimensional wave. |
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Definition
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Term
What are the units for lambda? |
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Definition
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Term
What does the symbol f stand for? |
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Definition
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Term
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Definition
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Term
When a source moves toward you, do you measure an increase or decrease in wave speed? |
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Definition
Neither. Wave speed remains the same. Frequency of the wave changes |
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Term
Long wavelengths have ______________ frequencies. |
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Definition
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Term
Short wavelengths have ___________ frequencies |
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Definition
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Term
During a concert, sounds from all the instruments reach you at the same time. Why? |
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Definition
ν Wave speed depends on the medium holding the wave. The sounds are all traveling through air so ν is constant for all frequencies and wavelengths. |
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Term
Using the equation: ν=f lambda How can the ν be constant (in air) for all frequencies? |
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Definition
f↑ then lambda↓ f↓ then lambda↑ frequency and wavelength vary inversely, giving a constant ν. |
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Term
A metronome is set so that it makes 10 complete vibrations in 12 seconds. Find the frequency of the metronome. |
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Definition
10 vibrations/12 seconds = .833 Hz |
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Term
While sitting on a pier, Carlos notices that incoming waves are 2 m between crests. If the waves lap against the pier every .5 seconds, find a.) the frequency and b.) the speed of the waves. |
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Definition
Lambda = 2 m; t = .5 sec/cycle = period; f = 1/.5 = 2; ν=f lambda = (2 meters)(2 cycles/second) = 4 m/s |
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Term
What is the wavelength of a 340 Hz sound wave when the speed of sound in air is 340 m/s? |
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Definition
f= 340 Hz; ν = 340 m/s; ν= f lambda; so lambda = 340/340; lambda= 1 meter |
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Term
Sound waves or percussion waves are what type of waves? |
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Definition
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Term
Can more than one vibration or wave exist at the same time in the same space? |
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Definition
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Term
When energy is transferred by wave from a vibrating source to a distant receiver, is there transfer of matter between the two points? |
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Definition
No. The wave moves through the medium. Energy is transferred by a disturbance in the medium. |
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Term
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Definition
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What is the frequency per second of a 100 Hz wave? |
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Definition
100 Hz = 100 cycles/second |
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Term
The Sears Tower has a frequency of .1 Hz. What is its period? |
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Definition
f = .1Hz = .1 cycle/second; period = 1/f = sec/.1 cycle = 10 seconds/cycle |
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Term
FM Radio waves are measured in ________________ |
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Definition
megahertz, 101FM is 101,000,000 cycles/second |
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Term
Radar and Microwave ovens operate in ___________________ |
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Definition
gigahertz or 100,000,000,000 cycles/second |
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Term
The frequency of the vibrating source and the frequency of the _______ it produces are the same |
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Definition
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Term
The Doppler effect occurs for __________, ___________, and ________. |
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Definition
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Term
A wave with vibration at right angles to the direction the wave is traveling is called a __________ ______ |
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Definition
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Term
What is the name of the V-shaped wave produced by an object moving on a liquid surface faster than the wave speed? |
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Definition
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