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# SHMS 8th Sci Vocab 4

### SHMS 8th Grade Science Vocab 4

Term | Definition |
---|---|

Acceleration | The rate at which velocity changes over time. |

Circuit | A closed path through which a current can flow. |

Series Circuit | A circuit that only has one path for energy to flow. |

Parallel Circuit | A circuit in which current follows more than one path. |

Force | A push or pull on an object. |

Inertia | The tendency of an object to resist change in its speed or direction. |

Friction | The resistance of motion between two objects. |

Net Force | The overall force on an object when all forces acting on the object are added together. |

Velocity | The speed in a given direction. |

Speed | The distance an object travels in a unit of time. (d/t) |

Weight | The force of gravity on the mass of an object. |

Newton | The unit of measurement for force. It is equal to the amount of force needed to accelerate 1 kilogram of mass at 1 meter per second per second. |

Newton's 1st Law of Motion | An object at rest will stay at rest and an object in motion will stay in motion at a constant velocity unless acted on by an unbalanced force. |

Newton's 2nd Law of Motion | The net force on an object is equal to its mass times acceleration. |

Newton's 3rd Law of Motion | If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction. (For every action there is an equal or opposite reaction.) |

Gravity | The force of attraction between two objects based on their masses and distance between them. |

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