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science
| Question | Answer |
|---|---|
| wave | |
| medium | the material that the wave can travel through |
| transverse wave | particles that move perpendicularly to the direction that the wave travels |
| crest | when the wave reaches its highest point from the resting point |
| trough | when the wave reaches its lowest point from the resting point |
| longitudinal wave | particles move back and forth in the same direction that the wave travels |
| compression | when the molecules and waves are most compacted and squished together |
| rarefaction | when the waves and molecules are most spread out and far apart |
| mechanical waves | waves that require a medium |
| electromagnetic waves | are not disturbances in a physical medium, don't need a medium |
| amplitude | measures how far particles in the medium move from their original rest position |
| wavelength | the distance from any point on a wave to the next identical point on the same wave |
| frequency | the number of waves that pass a point in a given amount of time (usually 1 second) |
| hertz | what measures frequency (hertz = one second) |
| wave speed | the speed that the wave travels |
| force | is a push or pull exerted on an object in order to change the motion of the object (n) |
| work | the use of force to move an object some distance |
| power | rate at which work is done or energy converted (j) |
| calculate the work F= 120n D=3m | 360j |
| Lauren runs around her house using 30,000j of work in 60 seconds. How much power does she have? | 500p |
| What is the difference between transverse waves and longitudinal waves? | In transverse waves the particles move perpendicular to the direction of the wave. In longitudinal waves the particles move back and forth in the direction of the wave. |
| How could the amount of work that you do increase? | You could increase the distance that you go, and/ or do your task in less time. |
| Emma ran around the track two times. On the first time she ran it in 45 seconds. The second time she ran it in 37 seconds. She wants to know how much her work changed between the both times around the track. How much did her work change? | The amount of work that she does not change since she is still going the same distance. |
| Would it be fair if a 200 pound person is wrestling a 110 pound person? | No. The larger person would have an advantage because they have a greater force, which also means they have more power over the smaller person. |
| If the wave goes high above the resting point, does it have a high amplitude or a low amplitude? | They have a high amplitude. |
| When finding the crest, do you measure from the resting point to the crest or from the trough to the crest? | You would measure from the resting point to the highest point on the wave. |
Created by:
shea.shea
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