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# WOD Quiz #1

### Green, yellow, & purple sheets

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

metric system | A system of measurement based on the numberĀ 10 |

SI | International System of Units. |

mass | A measure of the amount of matter an object contains |

weight | A measure of the force of gravity acting on an object |

volume | The amount of space an object takes up |

meniscus | The curved upper surface of a liquid in a column of liquid |

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

estimate | An approximation of a number based on reasonable assumptions |

accuracy | How close a measurement is to the true or accepted value |

precision | How close a group of measurements are to each other |

mean | The numerical average of the numbers in a list |

median | The middle number in a list of numbers |

mode | The number that appears most often in a list of numbers |

graph | A picture of information from a data table; shows the relationship between variables |

horizontal axis | A line that runs left to right along the bottom of a graph, on which the manipulated variable (or independent variable) is labeled |

vertical axis | A line that runs up and down along the side of a graph, on which the responding variable (or dependent variable) is labeled |

origin | The point where the x-axis and y-axis cross on a graph |

coordinate | A pair of numbers used to determine the position of a point on a graph |

independent variable | The variable that is changed on purpose |

dependent variable | The variable that changes in response to another variable |

hypothesis | A possible explanation for a set of observations; must be testable |

controlled experiment | An experiment in which only one variable is manipulated at a time |

operational definition | A statement that describes how to measure a particular variable or how to define a particular term |

patent | A legal document issued by a government that gives an inventor exclusive rights to make, use, or sell an invention for a limited time |

technology | How people modify the world around them to meet their needs or to solve practical problems |

obsolete | No longer in use |

prototype | A working model used to test a design |

engineer | A person who is trained to use both technological and scientific knowledge to solve practical problems |

Created by:
mcdankid7