--- title: The Moon's month and the year round the Sun — a lesson of Mova's school · trees and pragmatics description: «The Moon's month and the year round the Sun», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Two movements give us our biggest everyday units of time. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/) [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/) / The Moon's month and the year round th… # The Moon's month and the year round the Sun Lesson 119 of the world course of Mova's primary school: 25 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/119-moon-month-and-year/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/0/) — Two movements give us our biggest everyday units of time. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/1/) — The Earth spins once a day, which gives day and night, and it travels once round the Sun in about 365 and a quarter days, which gives the year and its seasons. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/2/) — A 10-year-old has done 10 laps of the Sun, each about 940 million kilometres long. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/3/) — The Moon makes no light of its own: the Sun always lights half of it, and as the Moon travels round the Earth we see more or less of that lit half. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/4/) — From new moon, when the lit side faces away and we see almost nothing, it waxes (grows) to full moon and wanes (shrinks) back again in about 29 and a half days. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/5/) — That was the first "month", the "moonth". - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/6/) — Twelve Moon months make about 354 days, 11 short of a year, so most years have 12 full moons and some have 13. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/7/) — An extra one is called a "blue moon", though it isn't blue, and that mismatch is why every calendar must choose: the Moon, the Sun, or both. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/8/) — The Moon rises about 50 minutes later each night, because while the Earth spins, the Moon moves on along its path and the Earth has to turn a bit more to catch it up. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/9/) — So the Moon's 12 or so hours in the sky slide round the clock, and you often see it in the daytime too. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/10/) — The Moon spins once in the same time it takes to go round the Earth, so the same face always looks at us, like a dancer turning to keep facing a partner. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/11/) — We never see its far side from Earth. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/12/) — A day is one spin of the Earth; a year is one trip of the Earth round the Sun, about 365 and a quarter days. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/13/) — Each trip of the Earth round the Sun is about 940 million kilometres long. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/14/) — The Moon makes no light of its own; it shines because sunlight falls on it. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/15/) — From one full moon to the next takes about 29 and a half days, so after a full moon on 3 March the next is around 1 or 2 April. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/16/) — At new moon the lit side of the Moon faces away from us, so we see almost nothing for about a night. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/17/) — A Moon that looks bigger each night is waxing; a Moon that looks smaller each night is waning. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/19/) — 365 ÷ 29.5 is about 12.4, so most years have 12 full moons and some have 13. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/20/) — An extra full moon is called a blue moon; it is not blue, and "once in a blue moon" means very rarely. - [21](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/21/) — A supermoon is a full moon when the Moon is nearest the Earth; it looks only a little bigger than the smallest full moon, hardly enough to notice. - [22](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/22/) — The Moon rises on average about 50 minutes later each night. - [23](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/23/) — The Moon can be seen in daylight when it is bright enough and not too close to the Sun in the sky. - [24](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/24/) — The Moon spins once in the same time it goes round the Earth, about 27 days, so the same side always faces us. - [25](https://md.mova.elamur.ai/free/en/corpora/school/world/119-moon-month-and-year/25/) — People long ago counted months by the Moon for farming and festivals, because its changing shape is easy to see and count; the word "month" comes from "moon". - ← previous: [Day and night, shadows and sundials](https://md.mova.elamur.ai/free/en/corpora/school/world/118-day-night-shadows-sundials/) - next →: [Time zones: why it's night in Sydney when it's day in London](https://md.mova.elamur.ai/free/en/corpora/school/world/120-time-zones/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)