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work,power,and wave
| Question | Answer |
|---|---|
| What is a wave? | A disturbance that travels from one place to another transporting energy, but not necessarily matter, along with it. |
| What is a medium? | A material through which a wave travels. |
| What is a transverse wave? | A waves that move the medium at right angles to the direction in which the waves travel. |
| what is a crest? | Highest point of a wave. |
| What is a trough? | Lowest point of a wave. |
| what is a longitudinal wave? | A waves that move the particles of the medium parallel to the direction in which the waves are traveling. |
| What is a compression? | The part of a longitudinal wave where the particles of the medium are close together. |
| What is a rarefaction? | The part of a longitudinal wave where the particles of the medium are farther apart. |
| What is a mechanical wave? | Waves that require a medium through which to travel. |
| What is a amplitude? | Maximum distance a wave varies from its rest position. |
| What is a wavelength? | A Wavelength is a distance between two corresponding parts of a wave. |
| What is a frequency? | How many waves can pass a given point per second, measured in Hertz (Hz). |
| What is a hertz? | The unit used to measure frequency. |
| What is a vibration? | A repeated back-and-forth or up-and-down motion. |
| What is a force? | A push/pull exerted in an object to change the motion of it. (Newtons) |
| What is a work? | Work is done when a force causes an object to move in the same direction that force is applied. ( Joules) |
| What is a power? | The rate of getting stuff/things done. ( Watts) |
| What is a wave speed? | The speed that a wave travels. |
| What is a electromagnetic wave? | A transfer wave that involves electric and magnetic energy. |
| Jake, who weighs 680 n, climbs a 6 meter ladder in 8 seconds. what was Jake's power? | 510 watts |
| running up a flight of stairs, Rosemary generates 450 watts of power. if it takes her 6 seconds to go up the stairs, the amount of work she does in running up the stairs is | 2,700J |
| When waves travel through a medium, what happens to the medium? | The waves do not carry the medium with them. |
| Give an example of a wave that can travel through empty space | sunlight (electromagnetic waves) |
| how are mechanical waves produced? | when a source of energy causes a medium to vibrate. |
| What can act as a medium? | solids, liquids, gases |
| What can be compared to compression and rarefaction in a transverse wave? | Crest and trough |
| If 360 Joules of work are needed to move a crate a distance of 4 meters, what is the weight of the crate? | 90N |
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