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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 |

The closeness of a series of values | precise |

Getting close to the expected or accepted value | accurate |

(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 |

a count or math definition/conversion are 2 conditions for this | infinite/unlimited significant figures |

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

the SI unit for volume | cubic meters |

is the product of a coefficient times base of 10 | scientific notation |

Kelvin temperatures can NEVER have this type of degrees | negative |

To convert Celsius to Kelvin | add 273 |

To convert Kelvin to Celsius | subtract 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 ( 1/100 ) | centi (c) |

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

1000 times smaller ( 1/1000 ) | milli (m) |

1000 times larger | kilo (k) |

10 times larger | deca (da) |

10 times smaller ( 1/10 ) | deci (d) |

grams, Liters, meters, seconds are examples of this | base units |

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

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

always includes a number and a unit | measurement |

The SI and metric system are based on multiples of this number | 10 |

Base units have this number value | 1 |