Jeopardy Vocabulary 1 Vocabulary 2 Sound Waves Doppler Effect&Medium Instruments Q $100 Q $200 Q...
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Transcript of Jeopardy Vocabulary 1 Vocabulary 2 Sound Waves Doppler Effect&Medium Instruments Q $100 Q $200 Q...
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JeopardyVocabulary
1Vocabulary
2Sound Waves
DopplerEffect&Medium
Instruments
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Final Jeopardy
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$100 Question from C1
The unit used to measure the intensity of a sound wave.
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$100 Answer from C1
What is a decibel (dB)?
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$200 Question from C1
The unit used to measure frequency; equalto one wavelength per second.
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$200 Answer from C1
What is hertz?
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$300 Question from C1
The scientific study of sound.
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$300 Answer from C1
What is acoustics?
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$400 Question from C1
The quality of highness or lowness of sound; it is associated with the frequency of a sound.
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$400 Answer from C1
What is pitch?
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$500 Question from C1
The amount of energy of a wave, per wavelength. It is associated with the amplitude of a sound wave and the quality of loudness produced by the sound wave.
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$500 Answer from C1
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What is intensity.
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$100 Question from C2
The sending out of high pitched sound waves and the interpretation of the returning echo.
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$100 Answer from C2
What is echolocation?
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$200 Question from C2
The strengthening of a sound wave when itcombines with an object’s natural vibration.
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$200 Answer from C2
What is resonance?
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$300 Question from C2
A space that contains no particles of matter.
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$300 Answer from C2
What is a vacuum?
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$400 Question from C2
An instrument that uses echolocation to locateobjects underwater; stands for sound navigationand ranging.
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$400 Answer from C2
What is sonar?
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$500 Question from C2
The strengthening of an electrical signal, often used to increase the intensity of a sound wave.
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$500 Answer from C2
What is an amplification?
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$100 Question from C3
Sound waves are caused by ________.
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$100 Answer from C3
What are vibrations?
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$200 Question from C3
Sound waves transfer energy by __________ air particles.
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$200 Answer from C3
What is compressing?
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$300 Question from C3
The sound of your voice is produced by theForce of air making your vocal cords _____.
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$300 Answer from C3
What is vibrate?
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$400 Question from C3
The intensity of sound is determined by its ___.
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$400 Answer from C3
What is amplitude?
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$500 Question from C3
Bonnie turns up the volume on her stereo. The stereo sends an electrical signal to the speakers. The signal changes the sound’s _____________.
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$500 Answer from C3
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What is intensity?
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$100 Question from C4
Neil listens to an ambulance as it travelsPast him. The sound of the siren _______ its frequency.
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$100 Answer from C4
What is decrease?
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$200 Question from C4
In this medium sound moves the fastest.
Material
A B C D
Speed 4,877m/s 343 m/s 5,130m/s
1,533m/s
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$200 Answer from C4
What is C?
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$300 Question from C4
Material A B C D
Speed 4,877m/s 343 m/s 5,130m/s 1,533m/s
Sound moves slower in less dense mediums. This material on the chart would be expectedto be the least dense.
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$300 Answer from C4
What is B?
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$400 Question from C4
Material A B C D
Speed 4,877m/s 343 m/s 5,130m/s 1,533m/s
The four material in the table are air, seawater,Iron, and aluminum. Air is the least dense material. This material is most likely to be air.
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$400 Answer from C4
What is B?
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$500 Question from C4
Imagine that you are standing beside a train track.A train blowing its whistle approaches , passes you, and then moves away. In a few sentences describe: How the sound you hear changes as the train moves.Why the frequency of the sound changes and how this change affects the pitch you hear.
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$500 Answer from C4As the train approaches, the pitch of its whistle goes up. The pitch then goes down as the train moves away. This change in pitch is called the Doppler Effect. As the train approaches, it catches up with the sound waves, so the waves come close together, increasing the frequency and making the pitch higher. As the train moves away, the waves are farther apat, so the frequency and the pitch decrease.
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$100 Question from C5
Picture someone playing the cello. This is how sound is produced.
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$100 Answer from C5
What are strings vibrate?
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$200 Question from C5
This is how the cello player could increase the volume of her playing.
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$200 Answer from C5
What is pull the strings farther, increasingThe amplitude?
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$300 Question from C5
When the cello player presses her fingers on the strings, she makes them shorter. This is how it change changes the pitch of the note.
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$300 Answer from C5
What is by shortening the strings, she makesthe strings vibrate at a higher frequencycreating a higher pitched sound?
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$400 Question from C5
Suppose that she moves her left hand closerto the bridge. This is how the frequency of the note will change.
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$400 Answer from C5
What is the frequency will increase?
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$500 Question from C5
A tuba and a string bass both make sounds with low pitches. The two instruments sound very different, though. In a few sentences, describe what is the same and different about the instruments. Be sure to use the words wavelength, frequency, and overtones in your answer.
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$500 Answer from C5A tuba produces sound by creating a columnof air to vibrate. A string bass produces soundthrough a vibrating string. Both instruments create sound with the same wavelengths andfrequencies, because their pitches are similar. However, the pitches have different overtones,so the instruments don’t have the same sound quality.
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Final Jeopardy1. A doctor uses ultrasound to:2. A CD player reads information from pits
on the CD. This information is used to make sound waves. First, the CD player produces __________ ____________.
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Final Jeopardy Answer
1. What is examining internal organs?2. What are electrical signals?