--- title: Measuring the world — length, mass, time and temperature — a lesson of Mova's school · trees and pragmatics description: «Measuring the world — length, mass, time and temperature», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Long ago people measured with hands, feet and steps, but everyone's feet are different, so the same room could be " --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Measuring the world — length, mass, ti… # Measuring the world — length, mass, time and temperature Lesson 90 of the world course of Mova's primary school: 17 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/90-measuring-the-world/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/0/) — Long ago people measured with hands, feet and steps, but everyone's feet are different, so the same room could be "ten feet" for one person and "twelve" for another. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/1/) — So people agreed on standard units that are the same for everyone: the metre for length, the kilogram for mass, the second for time and the degree Celsius for temperature. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/2/) — We choose a tool that fits the job: a ruler or tape measure for length, scales for mass, a clock or stopwatch for time and a thermometer for temperature. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/3/) — Mass is how much stuff is in something; weight is how hard gravity pulls on it. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/4/) — On the Moon an astronaut's mass stays the same but his weight is about six times smaller. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/5/) — Example: a 1-litre bottle of water has a mass of about 1 kilogram, so you can feel what a kilogram is just by lifting it. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/6/) — A standard unit is a measure that is the same for everyone. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/7/) — A metre is 100 centimetres, and a kilometre is 1000 metres. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/8/) — A kilogram is 1000 grams. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/9/) — One litre of water has a mass of about one kilogram. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/10/) — A minute is 60 seconds and an hour is 60 minutes. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/11/) — Water freezes at 0 degrees Celsius and boils at about 100 degrees Celsius. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/12/) — The normal temperature inside a healthy human body is about 37 degrees Celsius; a temperature well above that, such as 39, is a fever, a sign of illness. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/13/) — Mass is the amount of matter in an object; weight is the pull of gravity on it. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/14/) — An object has the same mass on the Moon as on Earth, but it weighs less there. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/15/) — When measuring with a ruler you must start from the zero mark. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/16/) — Measuring the same thing several times and taking the average (add the results up and divide by how many there are) gives a more reliable result. - ← previous: [Saving water and energy at home](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/) - next →: [Being a scientist — fair tests, guesses and evidence](https://md.mova.elamur.ai/free/en/corpora/school/world/91-being-a-scientist/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)