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AUTHOR: Sergio Tárrega
Energy is one of the most fundamental parts of our universe. We use energy to do work. Energy lights our cities, Energy powers our vehicles, trains, planes and rockets. Energy warms our homes, cooks our food, plays our music, etc. Energy powers machinery in factories and tractors on a farm.
Energy from the sun gives us light during the day. It dries our clothes when they are hanging outside on a clothes line. It helps plants grow. Energy stored in plants is eaten by animals, giving them energy. And predator animals eat they prey, which gives the predator animal energy. Everything we do is connected to energy in one form or another.
Energy is defined as: "the ability to do work."
When we eat, our bodies transform the energy stored in the food into energy to do work. When we run or walk, we burn food energy in our bodies. When we think or read or white, we are also doing work. Many tines it is really hard work!
Work means moving something, lifting something, warming something, lighting something. All these are a few of the various types of work. But where does energy come from?
There are many sources of energy. Now let's look at the video and answer the questions.
- ¿When was the first time that humans from the developed world started to use an energy resource massively apart from the muscle?
- Which are nowadays the most important energy resource to produce electricity?
- What is for the speaker the most dangerous problem of the world we live?
Short url: https://clilstore.eu/cs/5673