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Nickys stack
| Question | Answer |
|---|---|
| What is a wave? | A disturbance that transfers energy. |
| What is a Transverse wave? | Particles that move perpendicularly the direction the waves travel |
| What is a medium? | A liquid, solid, or gas that a wave can travel through. |
| What is the Crest of a wave? | The highest point on a wave. |
| What is the trough of a wave? | The lowest point on a wave. |
| What is a longitudinal wave? | Particles that move back and forth in the same direction as the wave is traveling. |
| What is compression? | Where particles in a wave are packed together tightly. |
| What is rarefaction? | Where particles in a wave spread apart. |
| What is a mechanical wave? | A wave that requires a medium. |
| What is a electromagnetic wave? | A wave that doesn't require a medium. |
| What is amplitude? | How far the wave is from the resting point to the crest or trough. |
| What is a wave length? | The distance from one exact same spot on a wave to another. Examples are crest to crest or trough to trough. |
| What is frequency? | The number of waves that pass a point in a certain amount of time. |
| What is a Hertz? | What we use to measure frequency. |
| What is wave speed? | The speed the waves travel at. |
| What is force? | A push or pull upon an object in order to change that objects motion. Measured in Newtons (N) |
| What is work? | The use of force to move an object a certain distance. Measured in Joules (J). |
| What is power? | The amount of work used in a certain amount of time. Measured in Watts (W). |
| A man tries to put a elephant on a escalator. The elephant weighs 3000N. The escalator lifts it 10 meters in 120 seconds. How much power was used? | P = 250 |
| A group of football players applying a force of 2400 N to move a football sled 15 meters. What amount of work will they have accomplished? | W = 36,000 J |
| What needs to change in a work equation to decrease the work value? | The distance needs to decrease and the force needs to decrease. |
| What needs to change in a power equation to increase the power value? | The work needs to increase and the amount of time it takes needs to decrease. |
| What needs to change in a power equation to alter the power value? | The work needs to either increase/decrease or the amount of time it takes needs to increase/decrease. |
| What is a difference between transverse waves and longitudinal waves? | Transverse waves move back and forward while longitudinal waves move parallel. |
| Does a mechanical wave need a medium to travel? | Yes. Without a medium mechanical waves can not move. |
| Does a electromagnetic wave need a medium to travel? | No. Light can travel through empty space and light is an example of electromagnetic waves. |
Created by:
NickyP2
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