| Question | Answer |
|---|---|
| work | the movement of an object using force |
| power | the rate of which work is done |
| force | a push or pull exerted on an object in order to change motion |
| wave | a curl of water breaking the shore, sound traveling to your ear, and light shining |
| medium | the material- solid, liquid, or gas wave can travel through |
| crest | the highest point of a wave |
| trough | the lowest point of wave |
| longitudinal wave | energy that is transferred from one end to another |
| transverse wave | particles that move perpendicular compared to the direction of the wave |
| compression | when you use force to push something closer together |
| rarefaction | when you pull something apart |
| mechanical wave | a wave that requires a medium |
| electromagnetic wave | a wave consisting of changing electric particles, a waves that doesn't require a medium |
| amplitude | the amount of energy that is being carried by a wave |
| wavelenght | 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 given amount of time |
| hertz | the measurement used to measure frequency |
| wavespeed | the speed a wave travels at |
| If a group of mules are carrying 600 Newtons over a distance of 700 meters, how amount of work is being accomplished? | 420,000 joules |
| A tractor pulls 800 Newtons of hay over the distance of 400 meters in 20 minutes, how much power is being used? | 28,000 watts |
| 1. What two things do you have to multiply to get work? | force and distance |
| 2. What two things do you have to divide to get power? | work and time |
| 3. Categorize these types of waves under mechanical or electromagnetic. sound, sunlight, water, x-rays, jump rope waves, ultraviolet light |
mechanical- sound, water, jump rope waves electromagnetic- x-ray, sunlight, ultraviolet |
| 4. If the wavelength of a transverse is shorter, is the frequency high or low? | high |
| 5. If the crest/trough of a wave is farther away from its resting point, will it have a higher or lower amplitude? | higher |
| If a horse runs 10 meters in 5 seconds, what is the wave speed? | 2 m/s |
