Lesson
Doppler Effect
5 days ago by
fheery_lcc_68303
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• Slide 1
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Doppler Effect

Text
• Slide 2
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Learning Outcomes

• State the Doppler Effect

• Be able draw the Doppler effect

• Give examples

• Explain in terms of frequency

• Slide 3
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• Question 4
300 seconds
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Moving to the North (up).
Moving to the South (down).
Moving to the West (left).
Moving to the East (right).
• Question 5
300 seconds
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Q. What can you tell about the motion of this object?
Moving left.
Moving right quickly.
Standing still.
Moving up slowly.
• Question 6
120 seconds
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Q. The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.
Redshift
Blueshift
Turbulance
Superposition
• Question 7
120 seconds
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Q. If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...
Moving towards the Earth
Moving away from the Earth
This is a trick question that cannot be answered
It isn't a star, it is a very large blueberry.
• Question 8
120 seconds
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Q. What best describes the doppler effect?
An apparent change in frequency of a wave due to the relative motion between a wave source and an observer
When sound changes pitch
When light changes color
An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.
• Question 9
300 seconds
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Q. The Doppler effect is seen when a wave-making source moves toward an observer.
True
False
• Question 10
300 seconds
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Q. When an ambulance move TOWARD you it sounds ________ pitched.
high
low
medium
• Question 11
300 seconds
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Q. When the car moves AWAY from you, its horn seems...
Low pitched
High pitched
Normal
• Question 12
300 seconds
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Q. Short sound waves are...
high pitched
low pitched
medium pitched
• Question 13
300 seconds
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Q. Long sound waves are...
high pitched
low pitched
medium pitched
• Slide 14
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• Question 15
60 seconds
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Q. Sound does not travel in space because
Space is too far away.
There is no matter in space.
Space is the final frontier
Space has planets.
• Question 16
30 seconds
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Q.

Roughly what is the speed of sound in water?

About 1 500 m/s

• Question 17
30 seconds
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Q.

Roughly what is the speed of sound in air?

The speed of light.

About 1 500 m/s

• Question 18
30 seconds
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Q.

Why does sound travel faster in solids than in liquids or gases.

They are harder.

The particles are closer together.

Solids have more energy.

Gases fill their container.

• Question 19
30 seconds
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Q.

Which state of matter do sounds travel fastest in?

Solid

Liquid

Gas

Plasma

• Question 20
30 seconds
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Q. Which factor does not affect the speed of sound:
temperature
distance
density
elasticity
• Question 21
30 seconds
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Q.

How are you at stating the Doppler Effect

Very confident

Okay

Not sure

Not a clue

• Question 22
30 seconds
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Q.

How are you at giving examples of the Doppler effect?

Very confident

Okay

Not sure

Not a clue

• Question 23
30 seconds
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Q.

How are you at explaining frequencies?