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Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises (see Ideal Gas Law).

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Radiational substance consist of alpha particles, beta particles  and gamma rays. 

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Radiational substance consist of alpha particles, beta particles  and gamma rays. 

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Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises (see Ideal Gas Law).

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Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises (see Ideal Gas Law).

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https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSjfkUiZfr5pBRd-ekHtcNwtVpXoJT4t1vxOjfK5Nv5OJQ-R5F

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heat

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Conduction is the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.

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Steven

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ovens

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Steven

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the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

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Heat is a form of energy

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Conduction is the process by which heat energy is transmitted through collisions between neighboring molecules. Think of a frying pan set over an open camp stove. The fire's heat causes molecules in the pan to vibrate faster, making it hotter.

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 Light, heat, microwaves and wireless communications are all forms of radiation

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 Light, heat, microwaves and wireless communications are all forms of radiation

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Convection is the motion of a fluid driven by temperature differences across that fluid. When a fluid is heated, the region in closest contact with the heat source becomes less dense due to increased kinetic energy in the particles. The portion of fluid that is less dense then rises, while the denser portion of fluid sinks.

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Steven

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the emission of energy as electromagnetic waves

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the emission of energy as electromagnetic waves

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heat

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Steven

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Heat keeps us alive without heat we would die of frostbite.

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Heat keeps us alive without heat we would die of frostbite.

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heat is a form of energy

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Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

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Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

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Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

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Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

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Heat is warm

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Heat is warmth coming from the sun and the core.