Flashcards
Science Test Revision
Cards in this deck (11)
- 1OBSERVED WAVES How do light and sound travel by waves?Light waves travel through vacuums, they get slowed down by particles.
Sound travels as waves, which are vibrating particles; waves energy goes to ear, which detects the sound and then it causes the ear drums to vibrate. - 2Diagram of wave
- 3Difference between by longitudinal waves a transverse wavesIn a transverse wave the particles of the medium (surface) move in a direction perpendicular to the direction of a wave.
In a longitudinal wave the particles of the medium move parallel to direction the wave moves - 4SOUND What are vibrations and how they need a medium?Vibrations are rapid back and forth movements; it needs a medium because when the sound is produced the air particles bump into each other sending the vibrations bumping into the other molecules which eventually hit the ear drum and you can hear the sound.
- 5How do different animals have different hearing ranges?Animals have different hearing ranges because they have smaller ear bones; the smaller they are the higher the vibrations the animals can hear or pick up.
- 6FrequencyFrequency measured in hertz (Hz)
- 7What is the difference between pitch and amplitude?The pitch of a sound is how high or low the sound is. A high sound has a high pitch and a low sound has a low pitch.
Amplitude is the maximum displacement or distance moved by a point on a wave measured from its equilibrium position. - 8The pitch on a wave (amplitude + frequency on another flashcard)
- 9How does the ear work ?
- 10How can it get damaged?Falls, blows to the head, sports injuries, and even listening to loud music can cause ear damage.
- 11What is the difference between speed of sound and light?Speed travels at 330 m/s and light travels at 299 792 458 m/s. one example is fireworks, you see the light before you even hear it.
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- Revision Flashcards on Science Test Revision, created by Maximus Ekon on 22/01/2019.
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- Maximus Ekon
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