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# Science: measurement

### Measurement

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

Why is measurement so important? | Without measurement it would be difficult for scientists to carry out experiments or form theories Measurement is used for quality control, safety, design and problem solving |

what is length | Length is a measure of how long an object is or the distance between two points |

what is the Standard Unit of length | The standard unit (SI) for length is the metre |

what are the other units for length | Other units for length include: Centimetre (cm) Millimetre (mm) Kilometre (km) |

convert 10cm to mm | 100mm |

convert 100mm to cm | 10cm |

convert 1000mm to m | 1m |

convert 0.56m to cm | 56cm |

what instruments are used to measure the length of a straight line | Metre stick (large lengths) Ruler Measuring tape Trundle wheel(large lengths) Vernier Callipers (diameter)(balls) |

what errors can be made when measuring length | Zero error When the scale on the metre stick does not start at zero Error of parallax When the scale is read from the wrong angle |

what Instrument ares used to measure the length of a curved lined | Opisometer |

what is area | Area is the amount of surface enclosed within its lines |

how do you Measure the area of a regular shaped object | you multiply the length by the width |

Measuring area of an irregular shaped object | To calculate the area of an irregular shaped object, you draw the object on special graph paper Each square on the graph paper is 1cm by 1cm or 1cm² |

what is volume | The amount of space that an object takes up |

how do you Measure the volume of a regular shaped object | To calculate the volume of a regular shape you multiply the length by the width by the height |

what is the Standard unit (SI) of area | The standard unit (SI) for area is the m² |

what is the standard unit (SI) of volume | The standard unit (SI) for volume is the m³ |

with what and how do you Measure the volume of a liquid | To calculate the volume of a liquid, you can use an graduated cylinder You must read: From the bottom of the meniscus (curved line) At eye level in order to get an accurate reading |

with what do you Measure volume of an irregular shaped object | To calculate the volume of an irregular shaped object, you can use an overflow can |

what is mass | The amount of matter in an object |

what is the standard unit (SI) for mass | The standard unit (SI) for mass is the kilogram(Kg) |

what is mass commonly measured in | Mass is commonly measured in grams (g) |

what Instrument are used to measure mass | Electronic balance/scales. It can also be called a mass balance/scales |

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

what is the standard unit (SI) of temperature | The standard unit (SI) for temperature is the Kelvin (K) |

what is temperature also measured in | Temperature is commonly measured in Degrees Celsius (°C) |

what is the instrument used to measure temperature | Thermometer |

what is the standard unit(SI) of time | The standard unit (SI) for time is the second (S) |

what are other units of Time | Other units of time include minutes(mins) and hours(hrs) |

what Instrument is used to measure time | Timer/stopwatch |