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# Scale and Proportion

### Vocabulary used in measuring distance and scale in maps

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

scale (for measurement) | A series of marks at regular intervals on an instrument that is used for measuring | INCH OR CENTIMETER MARKS ON A RULER, POUNDS OR KILOGRAMS GRAMS ON A WEIGHING SCALE, DEGREE MARKS ON A THERMOMETER |

scale (proportional relation) | The relation between the actual size of something and its size on a map, diagram, or model that represents it | THE MILEAGE SCALE ON A MAP SAYS THAT 1 INCH = 100 MILES. |

ratio | The relationship between two groups of people or things, represented by two numbers showing how much larger one group is than the other | THE RATIO OF MEN TO WOMEN IN A CITY IS 4 TO 5 (FOR EVERY 4 MEN, THERE ARE 5 WOMEN). |

aspect ratio | The relationship between the width and the height of the image on the screen of a television, an electronic device, etc. | THE TELEVISION SCREEN HAS AN ASPECT RATiO OF 16:9 |

proportion | 1) A part or share of a whole 2) The relationship of one thing to another in size amount, etc. 3) The correct relationship in size or degree between one thing and another or between the parts of a whole | 1) A HIGHER PROPORTION OF PEOPLE HAVE RED HAIR IN SCOTLAND THAN IN NIGERIA. 2) ADD VINEGAR TO WATER IN THE PROPORTION 1:4. 3) HIS HEAD SEEMS TOO LARGE FOR HIS BODY--IT IS OUT OF PROPORTION. |

map legend (key) | The explanation of symbols on a map or diagram | THE MAP LEGEND SHOWS SYMBOLS FOR MOUNTAINS, RIVERS, HIGHWAYS, AND CITIES. |

distance | The amount of space between two places or things | WHAT IS THE DISTANCE BETWEEN MOLINE AND CHICAGO (HOW MANY MILES IS IT FROM MOLINE TO CHICAGO)? |

perimeter | The total length of the outside edge of an area or a shape | THE PERIMETER OF A 10 X 15 FOOT BEDROOM IS 50 FEET. |

area | The amount of space covered by a flat surface or piece of land (described as a measurement) | THE AREA OF A 10 X 15 FOOT BEDROOM IS 150 SQUARE FEET. |

diagram | A simple drawing using lines to explain where something is, how something works, etc. | THE DIAGRAM IN THE INSTRUCTIONS SHOWS HOW TO PUT THE PARTS OF A BOOKSHELF TOGETHER. |

model | A copy of something, usually smaller than the original object | FRED BUILT A MODEL AIRPLANE FROM THE KIT HE BOUGHT AT THE TOY STORE. |

scale (range of numbers) | A range of levels or numbers used for measuring something | 1) HOW PAINFUL IS YOUR HEADACHE ON A SCALE FROM 1 TO 10? 2) WHAT IS THE SALARY SCALE FOR JOBS OF THIS TYPE? |