Essay on energy conservation and solution
Answers
Energy is all around us. It's flowing in our bodies, flying through the air, and beating down on us from the sun. It's everywhere. But what exactly 'is' energy? And how is it 'conserved?'
Explaining what energy is can be difficult. The physics definition says that energy is a currency that allows you to do work. Work is done when you apply a force over a distance, or transfer energy from one place to another.
he story of energy never ends, because energy can never be used up - it is said to be 'conserved.' Conservation of energy is the principle that energy is not created or destroyed; it only moves from one place to another - from one type of energy to another.
an example of energy conservation. Let's say you grab a bite to each for lunch, and then drive down the hill to the fair because you want to ride the reverse bungee. It's such a simple story, yet it has all kinds of energy transfers buried within it.
You ate food that started out as nuclear energy in the center of the Sun, which became light energy that the Sun shone out towards the Earth, where plants changed it into stored chemical energy, making the vegetables that you ate for lunch.
Your body then stored that chemical energy in the form of sugar inside your body. Then, it slowly transferred the energy to your muscles, where it changed into a mixture of mechanical energy as you moved your joints, and wasted heat energy. This heat energy is only 'wasted' in the sense that it isn't useful to us, but the energy will continue to move from type to type
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