Term |
Definition |

Metric System |
a measurement system based on the number 10 |

International System of Units (SI) |
a version of the metric system |

Mass |
a measurement of the amount of matter in an object |

Weight |
a measure of the force of gravity acting on an object |

Volume |
the amount of space an object or substance takes up |

Density |
a measure of how much mass is contained in a given volume |

Estimate |
an approximation of a number based on reasonable assumptions |

Accuracy |
refers to how close a measurement is to the true or accepted value |

Precision |
refers to how close a group of measurements are to each other |

Significant Figures |
communicate how precise measurements are |

Percent Error |
calculations that are ways to determine how accurate an experimental value is |

Mean |
the average of a set of data |

Median |
the middle number in a set of data |

Mode |
the most common number in a set of data |

Range |
the difference between the greatest value and the least value in a set of data |

Anomalous Data |
data that does not fit with the rest of a data set |

Graph |
a picture of your data that allows you to visually analyze and compare imformation |

Linear Graph |
a line graph in which the data points form a straight line |

Nonlinear Graph |
a line graph in which the data points do not form a straight line |

Model |
a representation of a simple or complex object or process |

System |
a group of parts that work together to perform a function or produce a result |

Input |
the material or energy that goes into a system |

Output |
the material or energy that comes out of a system |

Process |
what happens in a system |

Feedback |
output that changes the system in some way |

Safety Symbol |
signs the alert you to possible sources of accidents in a laboratory |

Field |
any area outside of a science laboratory |