--- title: Evaporation and condensation — a lesson of Mova's school · trees and pragmatics description: «Evaporation and condensation», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Water does not need to boil to become a gas: at any temperature some particles at the surface move fast enough to escape into the air. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/) [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/) / Evaporation and condensation # Evaporation and condensation Lesson 13 of the world course of Mova's primary school: 15 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/13-evaporation-condensation/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/0/) — Water does not need to boil to become a gas: at any temperature some particles at the surface move fast enough to escape into the air. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/1/) — This is evaporation. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/2/) — Evaporation is faster when it is warm, when it is windy, when the air is dry, and when the water is spread over a large surface. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/3/) — When water vapour in the air touches something cold, it cools, slows down and turns back into tiny drops of liquid water. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/4/) — This is condensation. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/5/) — For example, wet washing dries on a line on a warm windy day, and a bathroom mirror mists up during a hot shower. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/6/) — The white cloud just above a boiling kettle is not the gas itself: it is tiny drops of water that formed when the invisible vapour cooled in the air. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/7/) — Evaporation is a liquid turning into a gas at its surface, and it happens below the boiling point. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/8/) — Warmth, wind, dry air and a large surface all make evaporation faster. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/9/) — Evaporation cools what is left behind, because the fastest particles leave. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/10/) — Condensation is a gas turning into a liquid when it cools. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/11/) — Water vapour itself is invisible; clouds, mist, fog near the ground and the white "steam" from a kettle are tiny drops of water. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/12/) — Dew forms when water vapour in the air condenses on cool grass at night. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/13/) — Sweat cools our body as it evaporates from the skin. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/13-evaporation-condensation/14/) — When salty water evaporates, the water leaves and the salt stays behind. - ← previous: [Melting, freezing and boiling](https://md.mova.elamur.ai/free/en/corpora/school/world/12-melting-freezing-boiling/) - next →: [The water cycle](https://md.mova.elamur.ai/free/en/corpora/school/world/14-the-water-cycle/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)