--- title: Electric cars and charging — a lesson of Mova's school · trees and pragmatics description: «Electric cars and charging», a lesson of the technology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: An electric car has no engine burning fuel: a big battery under the floor powers electric motors that turn the wheels, so there are no explo --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/) [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/) / Electric cars and charging # Electric cars and charging Lesson 19 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/19-electric-cars-and-charging/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/0/) — An electric car has no engine burning fuel: a big battery under the floor powers electric motors that turn the wheels, so there are no explosions, no exhaust and hardly any noise. - [1](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/1/) — Instead of going to a petrol pump, it is plugged into a charging point, at home overnight or at a fast charger on a long trip. - [3](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/3/) — Picture standing at the kerb as one glides past with only a soft hum: that quietness is lovely for the street, and it is exactly why you look as well as listen before crossing. - [4](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/4/) — Batteries hold a lot of energy, so the rules are simple: don't play with charging cables, and tell an adult about any battery that is damaged, hot or smells. - [5](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/5/) — An electric car has a big battery under the floor that powers electric motors to turn the wheels, with no engine burning fuel. - [6](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/6/) — Electric cars are very quiet, so new ones must make a gentle sound at low speed so people can hear them coming. - [7](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/7/) — A charging point sends electricity from the grid (the country's network of power lines) along a cable into the car's battery; a fast charger can add a lot of range in about twenty to thirty minutes, while home charging usually takes hours. - [8](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/8/) — Charging cables carry high power, so children never play with them or their plugs. - [9](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/9/) — In regenerative braking the motor works backwards as a generator, a machine that makes electricity, when the car slows, putting some energy back into the battery, and some electric cars can almost stop without the brake pedal. - [10](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/10/) — A hybrid car has both a petrol engine and an electric motor with a small battery, and it switches between them or uses both, often driving silently at low speed in towns and starting the petrol engine when more power is needed, as on a hill. - [11](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/11/) — An electric car's battery pack is thousands of small lithium cells joined together, with cooling to keep them at the right temperature. - [12](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/12/) — Damaged car batteries can catch fire and fire crews have special training for them; old car batteries can be reused to store electricity for buildings. - [13](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/13/) — In the UK it is illegal to ride a private e-scooter on public roads and pavements; only rental scooters in trial areas are allowed, and only for older riders with a driving licence. - [14](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/14/) — E-scooter and e-bike battery fires have become a big worry for fire services. - [15](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/15/) — Electric buses charge at the depot overnight or quickly at some stops; London was reported to have more than a thousand of them. - [16](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/16/) — A hydrogen vehicle mixes hydrogen with oxygen from the air in a fuel cell to make electricity, and the only thing from its exhaust is water; hydrogen is still hard to make cleanly and has few filling stations. - [17](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/17/) — The range is how far an electric car can go on one charge; it depends on battery size, speed, weather and heating, and cold weather shortens it, because batteries work less well in the cold and heating the car uses power. - [18](https://md.mova.elamur.ai/free/en/corpora/school/technology/19-electric-cars-and-charging/18/) — With no engine in the front, some electric cars have a small boot there, called a frunk, meaning front trunk. - ← previous: [Car safety: brakes, seat belts and airbags](https://md.mova.elamur.ai/free/en/corpora/school/technology/18-car-safety/) - next →: [Buses, trams, lorries and traffic lights](https://md.mova.elamur.ai/free/en/corpora/school/technology/20-buses-trams-lorries-and-traffic-lights/) - ↑ back to [Technology](https://md.mova.elamur.ai/free/en/corpora/school/technology/)