Movement of heat caused by conduction, convection, and radiation

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Presentation transcript:

Movement of heat caused by conduction, convection, and radiation Susan Yurkhanova

Three Ways Heat Travels Conduction- heat that passes between substances that are in direct contact with each other Convection- up and down movement of gases and liquids; convection current Radiation- electromagnetic waves that travel through space; does not need medium to transfer

Examples Conduction- holding a metal rod above a fire Convection- air in our atmosphere Radiation- heat coming from fire

Experiment Materials- Color changing shirt (Del Sol) Sun Directions- Stand outside with shirt, wait and color will begin to change

Explanation What happened? How did it happen? Why did it happen? Sun made ink in the shirt change Color became visible How did it happen? The sun shined on the color changing shirt It changed the ink which made color appear Why did it happen? Radiation takes a BIG part in this experiment The ink went through a physical change The molecules changed state

Explanation Radiation- the sun made the ink go through a physical change, and the molecules changed state which made color appear Conduction- the chemical of the ink was in contact with the sun’s rays

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