--- title: Energy: what makes things happen — a lesson of Mova's school · trees and pragmatics description: «Energy: what makes things happen», a lesson of the physics course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Energy is what lets things move, heat up, light up or change; you cannot see it, but you can see what it does. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/) [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/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/) / Energy: what makes things happen # Energy: what makes things happen Lesson 31 of the physics 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/physics/31-energy-what-makes-things-happen/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/0/) — Energy is what lets things move, heat up, light up or change; you cannot see it, but you can see what it does. - [1](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/1/) — Your breakfast stores energy, and your body lets it out to run to school, to grow and to keep warm, which is why you are starving after a swim. - [2](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/2/) — Follow the energy back far enough and nearly all of it started in the Sun: plants catch sunlight to make food, animals eat plants, and even wind and rain on the hills are driven by the Sun's warmth. - [3](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/3/) — Energy is never used up, it only changes form: when a bouncing ball gets lower each bounce, the missing energy has turned into a little heat and sound. - [4](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/4/) — "Using energy" really means turning useful energy into heat that spreads out and is hard to use again. - [5](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/5/) — Energy is what lets things move, heat up, light up or change. - [6](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/6/) — Food stores energy that your body releases to move, grow and keep warm; most of it keeps you warm. - [7](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/7/) — Moving and keeping warm in cool water use lots of energy, and food labels count that energy, often in calories. - [8](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/8/) — Petrol burns inside a car engine and the hot gas pushes the parts that turn the wheels; electric cars store their energy in big batteries. - [9](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/9/) — Plants catch sunlight to make their food, and animals eat plants, so the energy in your breakfast started as sunlight. - [10](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/10/) — Coal, oil and gas are the remains of plants and tiny creatures that caught sunlight millions of years ago. - [11](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/11/) — A wind turbine turns the energy of moving air into electricity; the wind itself is made by the Sun warming the air unevenly. - [12](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/12/) — A solar panel turns light straight into electricity; it makes less on a cloudy day and none at night. - [13](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/13/) — Water held high behind a dam stores energy because of gravity, and the Sun lifted that water first as vapour that fell as rain. - [14](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/14/) — Energy can change form, but the total amount stays the same; it is never used up. - [15](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/15/) — A wind-up toy stores energy in a coiled spring, like a bent bow or a stretched rubber band. - [16](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/16/) — Each time a ball bounces, a little of its energy turns into heat and sound, so it never bounces back as high. - [17](https://md.mova.elamur.ai/free/en/corpora/school/physics/31-energy-what-makes-things-happen/17/) — Shivering is your muscles working fast to make extra heat. - ← previous: [Compasses and the magnetic Earth](https://md.mova.elamur.ai/free/en/corpora/school/physics/30-compasses-and-the-magnetic-earth/) - next →: [Fuels, the Sun and saving energy](https://md.mova.elamur.ai/free/en/corpora/school/physics/32-fuels-the-sun-and-saving-energy/) - ↑ back to [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/)