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# Energy Vocab

### Energy Vocab Cards Question and Answer By: Jake Pettit

Question | Answer |
---|---|

Wave | A disturbance that transfers energy |

Medium | The material - Solid, liquid, or gas - through which a wave can travel |

Transverse wave | In a transverse wave, particles move perpendicular to the direction the wave travels |

Crest | The point were the wave is at its highset |

Trough | The lowest point in a wave |

Longitudinal Wave | Particles move back and forth in the same direction that the wave travels. |

Compression | When a longitudinal wave closes in on itself |

Rarefaction | When a longitudinal wave spreads apart |

Mechanical Waves | Waves that require a medum |

Electromagnetic Waves | Waves that do not disturb a physical medium |

Amplitudes | How far particles move in the medium from their rest position. |

Wavelength | The distance from any point to the next identical point in the same wave |

Frequency | The number of waves that pass through a point in a given amount of time |

Wave speed | The speed that waves travel |

Hertz (Hz) | A unit of measurement used to measure frequency |

Force | A push or pull exerted on an object |

Work | The use of force used to move an object some distance |

Power | The rate of work that is being done |

Joe pushes a box with 50 N of force for 50 meters how much work does he do? | 2500 N |

Chuck pulls a wagon with 2500 N of force for 50 seconds how much power did he use? | 50 Joules |

What is the formula for work? | Work = Force x Distance |

What is the formula for power? | Power = Work / Time |

What is the formula for wave speed? | Wave Speed = Distance / Time |

A wave traveled 50 meters in 2.5 seconds. What is its speed? | 20 Hertz |

What is the highest point in a wave? | Crest |

What does a sound wave travel best through? Gas, solid, or liquid. | Solid |

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