| Question | Answer |
| What is power? | Power is the rate at which work is done. |
| What is Force? | Force is a push or pull exerted on an object in order to change the motion of the object. |
| What is work? | Work is the use of force to move an object some distance. |
| What is a wave? | A wave is the vibration in a medium. |
| What is a medium? | A medium is what a wave travels through. (Solid, liquid, or gas) |
| What is a crest? | A crest is the points were a wave is the highest. |
| What is a trough? | A troughs is the points were the wave is the lowest |
| What is a longitudinal wave? | A longitudinal wave is a wave were the particles move back and forth in the same direction that the wave travels. |
| What is compression? | Compression is were a section of the waves is closer together. |
| What is rarefaction? | Rarefaction is the section of a wave were it is farther apart. |
| What is a transverse wave? | A transverse wave is when particles move perpendicular to the direction the wave travels. |
| What are mechanical waves? | A mechanical wave is a wave that requires a medium. |
| What are electromagnetic waves? | Electromagnetic waves are vibrations of electric and magnetic fields and don't require a medium. |
| What is amplitude? | Amplitude is the measure of how far particles in the medium move from there rest position. |
| What is wavelength? | Wavelength is the distance from any point on a wave to the next identical point. |
| What is frequency? | Frequency is the number of waves that pass a point in a given amount of time. |
| What is a hertz? | A hertz is one wavelength per second. |
| What is wave speed? | Wave speed is the speed that waves travel. |
| Calculate the power:
W= 342 j
T= 45 sec.
P= ? | P= work divided by time
P= 342 divided by 45
P= 7.6 watts |
| Calculate the work:
W= ?
F= 447 newtons
D= 39 meters | W= force times distance
W= 447 times 39
W= 17,433 joules |
| Give 4 examples of mechanical waves. | 1. music
2. vocal sounds
3. waving a towel
4. water waves |
| Give 4 examples of electromagnetic waves. | 1. sunlight
2. microwaves
3. visible light
4. x-rays |
| How do you measure the wavelength of a transverse wave? | You would measure from crest to crest or trough to trough. |
| How would you measure the wavelength of a longitudinal wave? | You would measure from compression to crest or rarefaction to trough. |
| What is a longitudinal wave? | A longitudinal wave is when particles of the medium move up and down compared to the direction the wave is moving. |
| what is a transverse wave? | A transverse wave is when particles of the medium move perpendicularly compared to the direction the wave is moving. |
