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# SI units + Prefixes

### Reviewing metric prefixes and SI units of measure

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

The SI system is based off of what system | metric |

Trailing zeroes with a decimal , Non-Zeros, and Trapped Zeros are _______ signficant | always |

Leading and Trailing zeroes without a decimal are _______ significant | never |

measure of amount of matter object has | mass |

The closeness of a series of numbers; exactness of a measurement | precision |

Getting close to the true or accepted value | accuracy |

(difference)/ accepted value x 100 | percent error |

SI unit for time | seconds |

SI unit for length | meter |

SI unit for mass | kilogram |

SI stands for this | International System |

SI unit for temperature | Kelvin |

Leading zeroes are _____________ significant | never |

Trapped zeroes are ____________ significant | always |

Mass divided by volume is the formula for .... | density |

measure of gravity's pull on object's matter | weight |

the SI unit for volume | cubic meters |

is made up of a coefficient times base of 10, and exponent | scientific notation |

type of exponent needed for coefficient less than 1 | negative |

type of exponent needed for coefficient greater than 1 | positive |

Number used to convert Kelvin to Celsius | 273 |

temperature where all molecules stop moving | Absolute Zero O K |

measure of how hot or cold an object is | temperature |

100 times larger | hecto (h) |

100 times smaller | centi (c) |

non-SI unit for volume | Liter (L) |

1000 times smaller | milli (m) |

1000 times larger | kilo (k) |

10 times larger | deca (da) |

10 times smaller | deci (d) |

grams, Liters, meters, seconds are examples of what? | base units |

is a ratio of equivalent values Ex. 1 year = 365 days | conversion factor |

relationship between density and temperature | inversely proportional |

the difference between the experimental value and the accepted value | error |

2 main sources of error | human and mechanical |

round precise answer when adding and subtracting to .... | least number of decimal places |

round precise answer when multiplying or dividing to ..... | least number of significant figures |

order of math operations | P E M D A S |

Created by:
cadetjt