8th Grade Science Course Vocab
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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| A reflected sound wave | Echo
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| The ability of a material to bounce back after being disturbed | Elasticity
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| How much matter, or mass, there is in a given amount of space, or volume | Density
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| The amount of energy a sound wave carries per second through a unit area | Intensity
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| The loudness of different sounds is compared using this unit | Decibel
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| The description of how high or low a sound seems to a person | Pitch
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| The normal human range of hearing | Ultrasound
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| Sounds with frequencies below the human range of hearing | Infrasound
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| Known as your voice box and where your vocal cords are located | Larynx
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| The change in frequency of a wave as its source move in relation to an observer | Doppler Effect
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| What causes the Doppler Effect? | When a sound source moves, the frequency of the wave changes because the motion of the source adds to the motion of the waves.
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| What causes a Sonic Boom? | When a shock wave releases a huge amount of energy
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| The lowest natural frequency of an object | Fundamental Tone
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| The object's higher natural frequencies | Overtone
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| The study of how sound interacts with each other and the environment | Acoustics
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| Sound waves reflect back and forth off the hard surfaces | Reverberations
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| It collects sound waves and directs them into a narrow region | Ear Canal
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| Small, tightly, stretched, drum like membrane | Eardrum
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| A fluid-filled cavity shaped like a snail shell | Cochlea
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| The used of reflected sound waves to determine distances or to locate objects | Echolocation
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| A system that uses reflected sound waves to detect and locate objects underwater | Sonar
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| The device uses the reflected ultrasound waves to create a picture | Sonogram
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
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.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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