--- title: Saving water and energy at home — a lesson of Mova's school · trees and pragmatics description: «Saving water and energy at home», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Almost all the water on Earth is salty sea water; only a tiny part is fresh water we can drink, and most of that is frozen in ice or hidden --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/) [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/) / Saving water and energy at home # Saving water and energy at home Lesson 89 of the world course of Mova's primary school: 16 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/89-saving-water-and-energy/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/0/) — Almost all the water on Earth is salty sea water; only a tiny part is fresh water we can drink, and most of that is frozen in ice or hidden deep underground. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/1/) — The water from your tap has been collected, cleaned at a treatment works and pumped through pipes to your home, and after you use it, it must be cleaned again — every step needs energy. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/2/) — Hot water costs twice: once for the water and again for the energy that heated it, so a short shower instead of a full bath saves both. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/3/) — In a home most energy is used for heating, cooling and hot water; keeping heat in with thick walls, roof insulation and closed windows saves more than anything else. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/4/) — Example: a tap that drips once a second wastes thousands of litres a year — enough to fill dozens of baths — just because a small washer needs changing. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/5/) — About 97 out of every 100 litres of water on Earth are salty sea water. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/6/) — Most of the Earth's fresh water is frozen in ice caps and glaciers or lies deep underground. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/7/) — Tap water is cleaned at a water treatment works and used water is cleaned again at a sewage works. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/8/) — Pumping and cleaning water uses energy, so saving water also saves energy. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/9/) — Heating water uses a lot of energy, so saving hot water saves the most. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/10/) — A short shower usually uses much less water than a full bath. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/11/) — A dripping tap can waste thousands of litres of water in a year. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/12/) — Insulation in the roof and walls keeps heat inside a house in winter, and closed curtains on winter evenings help too. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/13/) — An LED bulb gives the same light as an old filament bulb with far less electricity. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/14/) — Many devices still use electricity on standby when they look switched off. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/89-saving-water-and-energy/15/) — Growing food and making clothes also uses a great deal of water, so wasting food wastes water too. - ← previous: [Recycling, waste and plastic](https://md.mova.elamur.ai/free/en/corpora/school/world/88-recycling-waste-plastic/) - next →: [Measuring the world — length, mass, time and temperature](https://md.mova.elamur.ai/free/en/corpora/school/world/90-measuring-the-world/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)