Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# PhysicsOS:Ch.1

### From Open Stax Free Book

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

accuracy | the degree to which a measured value agrees with correct value for that measurement |

approximation | an estimated value based on prior experience and reasoning |

classical physics | physics that was developed from the Renaissance to the end of the 19th century |

conversion factor | a ratio expressing how many of one unit are equal to another unit |

derived units | units that can be calculated using algebraic combinations of the fundamental units |

English units | system of measurement used in the United States; includes units of measurement such as feet, gallons, and pounds |

fundamental units | units that can only be expressed relative to the procedure used to measure them |

kilogram | the SI unit for mass, abbreviated (kg) |

law | a description, using concise language or mathematical formula, a generalized pattern in nature that is supported by scientific evidence and repeated experiments |

meter | the SI unit for length, abbreviated (m) |

method of adding percents | the percent uncertainty in a quantity calculated by multiplication or division is the sum of the percent uncertainties in the items used to make the calculation |

metric system | a system in which values can be calculated in factors of 10 |

model | representation of something that is often too difficult (or impossible) to display directly |

modern physics | the study of relativity, quantum mechanics, or both |

order of magnitude | refers to the size of a quantity as it relates to a power of 10 |

percent uncertainty | the ratio of the uncertainty of a measurement to the measured value, expressed as a percentage |

physical quantity | a characteristic or property of an object that can be measured or calculated from other measurements |

physics | the science concerned with describing the interactions of energy, matter, space, and time; it is especially interested in what fundamental mechanisms underlie every phenomenon |

precision | the degree to which repeated measurements agree with each other |

quantum mechanics | the study of objects smaller than can be seen with a microscope |

relativity | the study of objects moving at speed greater than about 1% of the speed of light, or of objects being affected by a strong gravitational field |

scientific method | a method typically begins with an observation and question that the scientist will research -> hypothesis -> test hypothesis with experiment(s) -> finalizes the result of the experiment and draws a conclusion |

second | the SI unit for time, abbreviated (s) |

SI units | the international system of units that scientists in most countries have agreed to use; includes units such as meters, liters, and grams |

significant figures | express the precision of a measuring tool used to measure a value |

theory | an explanation for patterns in nature that is supported by scientific evidence and verified multiple times by various groups of researchers |

uncertainty | a quantitative measure of how much your measured values deviate from a standard or expected value |

unit | a standard used for expressing and comparing measurements |

Created by:
Siegmund_Agarrado