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Question: How does energy flow in a system
Answer: When energy flows through a system, it changes a lot. Take a look at the picture down below, you can see there are a lot of squares with different colors on them, but we only need to focus on just three. The water flowing from the pipe has grey squares which are mechanical energy. It hits the wooden wheel which spins it to create electrical energy. The blue squares or electrical energy flow through a tube that is connected between the wheel and the pot of water with the heating device under it. The electrical energy flows from the tube to the heating device which powers it, which then creates thermal energy which is represented by the red squares.

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Energy: is the ability to do work, work is like the ability to move
Work: is the motion of energy
The Law of Conservation of Energy: is a law that states that Energy cannot be created or destroyed, it can be turned into another type of energy but it is never created.

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Question: Can Energy change?
Answer: Yes, energy can change. Think of a solar panel, it take the energy from light and changes it into electrical energy to power all sorts of things. There are many types of energy and they can be found everywhere changing.

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Question: Can energy be created or destroyed
Answer: No, energy cannot be created or destroyed. The reason for this is because it doesn't follow the law of conservation of mass. It isn't a law that if you don't follow it then you'll get in trouble. It is a type of law that tells you that energy cannot be created or destroyed, and if the law isn't followed, then you aren't correct. There will always be the same amount of energy no matter what you do to it.

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Question: Can an object transfer more than one type of energy
Answer: Yes, object can transfer more than one type of energy. Think of a campfire, when the chemical energy from the wood or gas is burned, it turns into light and thermal energy. When you put your hand near the campfire it is hot, when you look at the fire it is bright. Those are two example of different energy coming of chemical energy.

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Chemical energy is a type of energy that is stored or held in between bonds in atoms. If you don't know what those are, they are things that hold atoms, very tiny little things together, like a glue. Chemical energy is stored or is in food and fuel, and both of those have a lot of it. It is given off when you body breaks apart food in you stomach or when fuel is burned. Think of a car that needs gas to work, the car burns the fuel to get the chemical energy that allows it to work.

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Sound energy is carried by sound waves. Those waves can travel through solids, liquids, and gas. Think about a tv, if the tv is really loud and you're in the other room, you can hear it because sound waves are pushing against the wall, which then vibrates the wall, which makes more sound energy, that is also how your ears work. Also it is created when an object vibrates or moves.

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Light or Radiant energy is the energy carried by light. They are two separate things think of a solar panel. The solar panel doesn't just eat up all the light, it takes the energy away from the light. It is also better to be called radiant energy because all types of electromagnetic radiation have energy. But it can also be called visual light because it's electromagnetic radiation is visible to the eye. Also if you are wondering what electromagnetic radiation is, it is a type of wave that things give off.

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Electrical energy is the energy that is carried by other energy that has been changed. You all probably know it as electricity and that is also a way to saw Electrical energy. It is also important to mention static electricity, static electricity is made when things rub together. Think of going down a plastic slide, your clothes rub against the plastic and it sometimes shocks you or feels weird when your hands are near the plastic. What you're feeling and creating is static electricity.

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Mechanical energy is energy that an object has because of it's position or where it is resting. Mechanical Energy is often used to move lift, and hold object. Think of a Piñata, it is attached to a rope that is hung over a tree or pole and you pull it up and down. That is mechanical energy.

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Thermal energy is energy that has to do with temperature. The reason it happens is because the the vibration or movement in atoms. If you don't know what they are, they are very tiny things that you can't see individually or apart. When they move very fast, they give of thermal energy. It is also important to say that the hotter something is, the more energy it has.