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Matter is made up of atoms and molecules (groupings of atoms) and these atoms and molecules are constantly jiggling around, bumping into each other. When the molecules (for example a water molecule in the air) bump into our skin, there is a transfer of energy. If they hit our skin with less force than the molecules making up our skin already are hitting each other with, our skin-molecules will go a bit slower, and the other molecules will go a bit faster after the collision, and we will feel colder. If they hit with more force than the skin-molecules had, the skin-molecules will go faster and we will feel warmer. The energy that speeds the atoms and molecules up in the first place comes from many, many different sources. For example when you burn wood, the chemical reaction between the wood and the oxygen in the air to produce ash, CO2 and water spits out the new molecules with a pretty decent force, and it is therefore not smart to hold a burning log in your hand. They get such great speed that they begin to glow, what we see as a flame (a phenomenon that has to do with electromagnetism). When this light hits your body, the molecules in your skin absorb it and starts to jiggle faster, which is why you can feel the heat from a fire even when you are not touching any of the fast molecules from the reaction. This is the same reason why you want to sit in the shade on a hot summer day. You want to absorb as little of the light from the sun as possible. The thing that makes the sun so incredibly hot in the first place is another way to get heat: fusion. Here several light atoms combine to create a heavier atom, and afterwards spit out a particle with insane speed, enough to heat the interior of the sun to millions of degrees. In the end almost every physical process creates some amount of heat. Rubbing your hands together takes chemical energy stored in your muscles and turns it into heat, both in the muscles themselves and in the skin of your hands. Stopping a car takes the kinetic-, movement-energy of the car, and turns it into heat in the breaks. Reading this sentence takes energy stored in chemicals delivered to your nerve-cells by your blood and turns it first into heat and electrical impulses, which are your thoughts, before they too ultimately become heat due to the electrical resistance in your brain.

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βˆ™ 15y ago
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βˆ™ 5mo ago

Heat is created through the transfer of energy from one object to another. This transfer can occur through various processes such as friction, chemical reactions, or the absorption of electromagnetic radiation. The energy transferred causes the particles in the object to move faster, resulting in an increase in temperature and the sensation of heat.

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βˆ™ 13y ago

Heat is thermal energy at constant pressure. What you think of as heat is normally the movement of thermal energy. Thermal energy is the amount of movement a given object has in it's molecular structure. Heat is a good way to quantify this. What you probably think of as heat (temperature that is. something feels hot, something feels cold, ect) is actually heat transferring from one object to another. You feel cold because your body is loosing thermal energy at one point, and that is how your mind interprets it. Same is for hot things, only reversed obviously.

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βˆ™ 17y ago

It is created from bonds cracking.Each bond has large energy,when it cracks, releases its energy.

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βˆ™ 12y ago

Heat is created by the sun the sun Generates heat and beams it onto the earth.

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βˆ™ 15y ago

yes. By running an electric current through a metal coil that has high resistance. Like in a toaster.

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