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Sound & Light
Unit 8.3 Sound & Light
| Question | Answer |
|---|---|
| frequency of a water wave impacts | how many water waves pass at a given time |
| wavelength of a water wave impacts | how far apart the water waves are |
| amplitude of a water wave impacts | height of the water wave |
| the highest wave energy | is closest to the wave source |
| sound wave travels | sound waves transfer energy to particles in a medium in which they travel through. In air the particles push one another to move the energy wave, but air particles themselves do not travel with the wave. |
| changing the amplitude of a sound wave results in | a change in loudness |
| decreasing the loudness of a sound wave results in | a decrease in amplitude but does not affect pitch ( frequency) |
| changing the pitch of a sound wave results in | the frequency of the wave. |
| increasing the pitch but not the loudness of a sound wave | increases the frequency of the wave but does not affect the amplitude. |
| increasing the loudness of a sound wave | increases the energy of the wave- creating the amplitude to increase ( bigger waves). |
| decreasing the pitch of a sound wave | results in less energy from the source- creating fewer waves per minute. |
| Visible light | contains all colors of the rainbow |
| Light waves travel at different speeds | this impacts what colors we see and brightness |
| When light travels through different media (medium) | it changes directions |
| the frequency of light waves impacts how the | different frequencies of light refract differently |
| the object’s molecules vibrate because energy from the sound wave is | absorbed |
| If the sound wave frequency is doubled, the energy is | doubled |
| If the sound wave amplitude is doubled, the energy is: | increased 4 times |
| If I increase the amplitude of a sound wave | it will cause the molecules to vibrate, creating more energy. |
| When sound waves travel from one medium to another, the energy of the wave can pass through the new medium or | transmit. |
| When sound waves travel from one medium to another, the energy of the wave be trapped in the medium and not pass through or | be absorbed. |
| Wave energy can also bounce off the new medium causing the wave to change direction. This is known as | reflection |
| Sound waves | need a medium in order to travel |
| Light waves | do not need a medium in order to travel |
Created by:
crumsey
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