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# IPC VOCAB 11&12

### CHAPTER 12

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

wave | an oscillation that travels |

vibration | a word that means the same as oscillation |

wave pulse | a short length of wave that travels |

transverse | a wave where the oscillation is perpindicular to the direction of motion |

longitudinal | a wave where the oscillation is in the same direction as the direction of motion |

wavelength | the length of one complete wave |

natural frequency | a special frequency at which objects vibrate if they are disturbed |

resonance | a special condition where the frequency you push matches the natural frequency of the system, resulting in large amplitude waves |

interference | the interaction of two or more waves with each other |

boundary | a place where a wave changes suddenly |

reflection | the process of bouncing a wave off a boundary |

refraction | the process of bending a wave as it crosses a boundary |

diffraction | what happens when a wave bends around obstacles or through holes |

absorption | the process where a wave gets smaller and smaller |

node | a point on a wave where there is no motion |

antinode | the place on a wave where the amplitude is largest |

harmonic | a wave whose frequency is a multiple of another wave |

standing wave | a wave that is trapped between two boundaries |

harmonic motion | back and forth or repeating motion |

cycle | a part of motion that repeats over and over |

system | a group of things we think are important to consider when analyzing something |

oscillator | a system in harmonic motion |

hertz | a unit of one cycle per second |

period | the time it takes to complete one cycle |

frequency | the number of cycles per second |

amplitude | the size of a cycle |

damping | any process that causes cycles to get smaller and smaller in amplitude |

phase | a way to identify where an oscillator is in its cycle |