--- title: Heating, water pipes and drains — a lesson of Mova's school · trees and pragmatics description: «Heating, water pipes and drains», a lesson of the technology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: The clean water arrives from a treatment works, pushed along by pumps and by gravity from reservoirs and water towers up high. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/) [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/) / [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/) / Heating, water pipes and drains # Heating, water pipes and drains Lesson 13 of the technology course of Mova's primary school: 18 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/technology/13-heating-water-pipes-and-drains/). - [1](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/1/) — The clean water arrives from a treatment works, pushed along by pumps and by gravity from reservoirs and water towers up high. - [2](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/2/) — The boiler is the home's heart for warmth: it heats water, and a pump sends that hot water round pipes to the radiators and taps. - [3](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/3/) — When you pull the plug in the bath, the water gurgles away down the drain, under the street, all the way to a sewage works where bacteria help clean it. - [4](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/4/) — Knowing a few of these secrets helps in an emergency: where the stopcock is, what the carbon monoxide alarm is for, and why fat never goes down the sink. - [5](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/5/) — A boiler burns gas, or uses electricity, to heat water, and a pump sends the hot water round pipes to radiators and taps; gas boilers are fitted by registered gas engineers. - [6](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/6/) — A gas boiler can leak carbon monoxide, a poison gas you cannot see or smell, so every home with one needs a carbon monoxide alarm. - [7](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/7/) — Modern condensing boilers catch heat from the steam in their fumes, which is why a white cloud and drips of water come from their pipe outside in winter. - [8](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/8/) — A radiator warms the air next to it, which rises and moves round the room; it heats the room more by moving warm air than by glowing heat; radiators often sit under windows, so the rising warm air meets the cold air coming off the glass. - [9](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/9/) — A wall thermostat measures the room's temperature and tells the boiler to start or stop; turning it right up does not heat the room faster, it only lets it get hotter in the end. - [10](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/10/) — Cold tap water comes from a treatment works, where it is filtered and has a little chlorine added to kill germs, and is pushed through underground pipes by pumps and gravity. - [11](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/11/) — Stored hot water is kept at about 60 degrees to stop germs growing in the tank; run the cold first in a bath and test it with your elbow, because hot water can scald (burn the skin); the hot tap runs cold at first because the cooled water already sitting in the pipe has to come out before the hot arrives. - [12](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/12/) — Under a sink, a U-bend holds a little water that blocks smells from the drain coming back up. - [13](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/13/) — Fat poured down the sink sets hard in sewers and, with wet wipes, makes giant lumps called fatbergs; some have weighed more than a lorry. - [14](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/14/) — When you flush, a valve opens and water from the cistern rushes into the bowl; a float rises as the cistern refills and shuts off the water when it is full; most flushes use several litres. - [15](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/15/) — At a sewage works, waste water is screened, settled in tanks and cleaned by helpful bacteria before the clean water goes back to rivers, and the sludge can be turned into gas for energy. - [16](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/16/) — The stopcock is a tap where the water comes into the house, often under the kitchen sink; turning it off stops all the water if a pipe bursts. - [17](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/17/) — Water expands when it freezes, which can split a pipe; when it thaws, water pours out, so pipes in lofts are wrapped in foam lagging. - [18](https://md.mova.elamur.ai/free/en/corpora/school/technology/13-heating-water-pipes-and-drains/18/) — Only pee, poo and toilet paper should be flushed, and you keep away from sewers, treatment tanks and any water leaking near electrics. - ← previous: [Washing, drying, vacuuming and ironing](https://md.mova.elamur.ai/free/en/corpora/school/technology/12-washing-drying-vacuuming-ironing/) - next →: [Electricity at home: switches, plugs, fuses and alarms](https://md.mova.elamur.ai/free/en/corpora/school/technology/14-electricity-at-home/) - ↑ back to [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/)