--- title: Wind and the air around the Earth — a lesson of Mova's school · trees and pragmatics description: «Wind and the air around the Earth», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: The Earth is wrapped in a thin blanket of air called the atmosphere, held to the planet by gravity. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/) [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/) / Wind and the air around the Earth # Wind and the air around the Earth Lesson 69 of the world course of Mova's primary school: 20 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/69-wind-and-the-atmosphere/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/0/) — The Earth is wrapped in a thin blanket of air called the atmosphere, held to the planet by gravity. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/1/) — If the Earth were an apple, the air would be thinner than its skin. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/2/) — The air is thickest near the ground and gets thinner the higher you go. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/3/) — Almost all the weather happens in the lowest layer, the troposphere, which is only about 12 kilometres thick, and in it the air gets colder as you climb, which is why mountain tops are snowy. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/4/) — Higher up, in the stratosphere, there is a layer of a gas called ozone that soaks up much of the Sun's harmful ultraviolet light. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/6/) — Wind starts with the Sun: it warms some places more than others, warm air rises, and cooler air flows in to take its place. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/7/) — For example, on a sunny day at the seaside the land warms faster than the sea, so the air over the land rises and a cool sea breeze blows onto the beach; at night the land cools faster and a land breeze blows out to sea. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/8/) — The atmosphere is the layer of air around the Earth, held by gravity. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/9/) — The air gets thinner the higher you go. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/10/) — High up the thin air presses less on you, so your ears can pop when you go up a high hill or fly in a plane. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/11/) — Almost all weather happens in the lowest layer of the atmosphere, the troposphere. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/12/) — In the troposphere the air usually gets colder the higher you go. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/13/) — The ozone layer in the stratosphere soaks up much of the Sun's harmful ultraviolet light. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/14/) — Big passenger planes fly about 10 kilometres up, above most clouds and storms. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/15/) — Space is usually said to begin about 100 kilometres above the ground. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/16/) — Winds start because the Sun warms the Earth unevenly. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/17/) — Land warms up and cools down faster than water. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/18/) — A sea breeze blows from the sea onto the land on sunny days; a land breeze blows out to sea at night. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/19/) — An anemometer measures how fast the wind blows. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/20/) — A wind is named after the direction it comes from, so a north wind blows from the north. - ← previous: [Storms: thunder, lightning, hurricanes and tornadoes](https://md.mova.elamur.ai/free/en/corpora/school/world/68-storms-and-wild-winds/) - next →: [Stars, planets and constellations in the night sky](https://md.mova.elamur.ai/free/en/corpora/school/world/70-the-night-sky/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)