Science Chapter 14
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Loudness and pitch are important to determining | sound quality.
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| Sound | wave that is produced by a vibrating object that travels through matter.
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| The shorter the object | the higher the pitch.
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| The longer the object | the lower the pitch.
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| Disturbances | are back and forth motions that travel in the same direction as the medium.
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| Our body's sound making instrutment is | our voice box (larynx).
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| Larynx is the | voice box.
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| The middle ear consists of a hammer, anvil and stirrup are the | eardrum.
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| Sound waves vibrate particles. | sound waves vibrate particles.
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| Kinectic energy | is transferred as particles are moved by compression. (particles are moving)
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| Robert Boyle,a british scientist, used a clock | to show that sound must have a medium.
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| The closer the molecules are | the faster sound travels.
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| As temperatures increases | sound travels faster.
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| Pitch is the | highness or lowness of a sound.
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| Objects vibrating very fast produce | high-pitched sounds.
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| Objects vibrating very slowly produce | a lower-pitched sounds.
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| Cycle | one complete wave.
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| People hear in a range of | 20 to 20,000HZ.
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| Ground waves are used by elephants to communicate up to | 20 miles away.
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| Ultrasounds are waves above | 20.000Hz.
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| Resonance | is the the strengthing of a sound wave.
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| The combination of waves produces sound quality known as | TIMBRE
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| Oscilloscope is a | scientific instrument that tracks a electrical signal.
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| Christian Doppler (Austrian scientist) | wrote a paper about how pitch changes when the sound source moves towards or away from a person.
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| If frequency increases | the pitch increases.
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| What makes a sound louder? | The amount of energy a wave has determines how soft or loud sound is.
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| Decibel | the unit used to measure intensity
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| Amplification | the increased strength of an electrical signal.
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| Acoustics | the scientific study of sound.
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| Echoes | reflected sound waves
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| Echoes of ultrasound waves are used to find | food, detect underwater objects,etc
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| Echolocation | 200 squeaks/second
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| Sonar | sound navigation and ranging
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| Sonar | is used my the military to combat the enemy
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| Doppler ultrasound | is a technology that detects fluid movement through the body.
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| 3 main musical instruments | stringed, wind and percussion
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| Tech toys to record sound | telephones, phonographs and CD players
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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