Jeopardy Vocabulary 1 Vocabulary 2 Sound Waves Doppler Effect&Medium Instruments Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy

$100 Question from C1 The unit used to measure the intensity of a sound wave.

$100 Answer from C1 What is a decibel (dB)? Back to Jeopardy

$200 Question from C1 The unit used to measure frequency; equal to one wavelength per second.

$200 Answer from C1 What is hertz? Back to Jeopardy

$300 Question from C1 The scientific study of sound.

$300 Answer from C1 What is acoustics? Back to Jeopardy

$400 Question from C1 The quality of highness or lowness of sound; it is associated with the frequency of a sound.

$400 Answer from C1 What is pitch? Back to Jeopardy

$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.

$500 Answer from C1 Back to Jeopardy What is intensity.

$100 Question from C2 The sending out of high pitched sound waves and the interpretation of the returning echo.

$100 Answer from C2 What is echolocation? Back to Jeopardy

$200 Question from C2 The strengthening of a sound wave when it combines with an object’s natural vibration.

$200 Answer from C2 What is resonance? Back to Jeopardy

$300 Question from C2 A space that contains no particles of matter.

$300 Answer from C2 What is a vacuum? Back to Jeopardy

$400 Question from C2 An instrument that uses echolocation to locate objects underwater; stands for sound navigation and ranging.

$400 Answer from C2 What is sonar? Back to Jeopardy

$500 Question from C2 The strengthening of an electrical signal, often used to increase the intensity of a sound wave.

$500 Answer from C2 What is an amplification? Back to Jeopardy

$100 Question from C3 Sound waves are caused by ________.

$100 Answer from C3 What are vibrations? Back to Jeopardy

$200 Question from C3 Sound waves transfer energy by __________ air particles.

$200 Answer from C3 What is compressing? Back to Jeopardy

$300 Question from C3 The sound of your voice is produced by the Force of air making your vocal cords _____.

$300 Answer from C3 What is vibrate? Back to Jeopardy

$400 Question from C3 The intensity of sound is determined by its ___.

$400 Answer from C3 What is amplitude? Back to Jeopardy

$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 _____________.

$500 Answer from C3 Back to Jeopardy What is intensity?

$100 Question from C4 Neil listens to an ambulance as it travels Past him. The sound of the siren _______ its frequency.

$100 Answer from C4 What is decrease? Back to Jeopardy

$200 Question from C4 In this medium sound moves the fastest. MaterialABCD Speed4,877m/s343 m/s5,130m/s1,533m/s

$200 Answer from C4 What is C? Back to Jeopardy

$300 Question from C4 MaterialABCD 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 expected to be the least dense.

$300 Answer from C4 What is B ? Back to Jeopardy

$400 Question from C4 MaterialABCD Speed4,877m/s343 m/s5,130m/s1,533m/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.

$400 Answer from C4 What is B? Back to Jeopardy

$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.

$500 Answer from C4 As 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. Back to Jeopardy

$100 Question from C5 Picture someone playing the cello. This is how sound is produced.

$100 Answer from C5 What are strings vibrate? Back to Jeopardy

$200 Question from C5 This is how the cello player could increase the volume of her playing.

$200 Answer from C5 What is pull the strings farther, increasing The amplitude? Back to Jeopardy

$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.

$300 Answer from C5 What is by shortening the strings, she makes the strings vibrate at a higher frequency creating a higher pitched sound? Back to Jeopardy

$400 Question from C5 Suppose that she moves her left hand closer to the bridge. This is how the frequency of the note will change.

$400 Answer from C5 What is the frequency will increase? Back to Jeopardy

$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.

$500 Answer from C5 A tuba produces sound by creating a column of air to vibrate. A string bass produces sound through a vibrating string. Both instruments create sound with the same wavelengths and frequencies, because their pitches are similar. However, the pitches have different overtones,so the instruments don’t have the same sound quality. Back to Jeopardy

Final Jeopardy 1.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 __________ ____________.

Final Jeopardy Answer 1.What is examining internal organs? 2. What are electrical signals?