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Waves Work+Power
| Question | Answer |
|---|---|
| A ______ is a disturbance that transfers energy. | Wave. |
| A material of any form that a wave can travel and pass through. | Medium. |
| Waves in which the particles move perpendicularly to the direction of the wave. | Transverse Waves. |
| The points in a wave that are the highest. | The crests. |
| The points in a wave that are the lowest. | The troughs. |
| Waves in which particles move parallel to the direction of the waves. | Longitudinal Waves |
| A motion similar to moving a slinky together to which parts of the slinky are touching. | Compression. |
| When you spread the coils of the slinky apart. | Rarefaction. |
| Waves that require a medium. | Mechanical waves. |
| Waves that can travel without a medium. (Examp. Sunlight) | Electromagnetic waves. |
| How far particles in a medium move from their rest position. | Amplitude. |
| The distance from any point on a wave to the next identical point. | Wavelength. |
| The number of waves that pass in a certain amount of time. | Frequency. |
| The unit of measure for frequency. | Hertz (Hz) |
| The speed in which waves travel (Formula- Frequency × wavelength) | Wave speed. |
| A push or pull used to change the motion of an object. | Force. |
| The force used to move an object. | Work (W= f× d) |
| The rate at which you do work. | Power (P= w/t) |
| A person weighing 1200 N gets on an elevator. The elevator lifts the person 3 m in 5 seconds. How much power was used? | 720 Watts. |
| If 720 Joules of work are needed to move a box a distance of 8 m, what is the weight of the crate? | 90 N |
| What do you need to find if the force is 12 N and the work is 144 J? | The distance (12 m) |
| What do you need to find if the distance is 12 m and the force is 12 N? | The work (144 Joules) |
| If the power is 50 Watts and the work is 450 joules, what do you need to find? | The time. |
| What is the unit for power? | Watts or j/s |
| What is the unit for work? | Joules. |
| Is it possible to find amplitude by measuring compression to compression on a transverse wave? | No, transverse waves require measuring trough to trough or crest to crest. |
| How do you measure amplitude on transverse waves? | From crest to crest or trough to trough. |
| What is the rest position also referred to as? | The line of equilibrium. |
| Amplitude is the amount of how much ______ is being transferred by a wave. | Energy. |
| What would be the medium of a sound wave? | The air. |
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