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Published byGeoffrey Ball Modified over 9 years ago
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EnergyTransfer
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MOVE Energy can MOVE from one place to another (like lightning)! TRANSFER This is called Energy TRANSFER
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Energy always transfers to a LESS place that has LESS energy. Think of it like sharing: giving energy to a place that doesn’t have as much. The ice has LESS thermal energy, so the drink TRANSFERS TRANSFERS energy to the ice, causing it to melt!
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TRANSFER There are 3 ways to TRANSFER energy: 1) Conduction = energy transferred by touching The fork will conduct electricity when it touches the outlet.
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2) Radiation = energy transferred without touching The fire’s thermal energy is radiating out to warm the room
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3) Convection = energy transferred when heat rises, then cools in a circular motion.
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Can You Identify the Energy Transfer? Decide if each example shows conduction, radiation, or convection.
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You can burn your hand from putting a metal stick in the candle flame. Conduction because you were actually touching it.
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Getting an X-ray Radiation, because it doesn’t touch you
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It is hotter in your attic and upstairs than it is downstairs. Convection because the heat is rising, while the cool falls.
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Lightning burning a tree Conduction because it touches the tree
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Getting cooked from the inside out by an atomic bomb Radiation because you aren’t touching the bomb
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Water boiling in a pot Convection because the heat rises and cools in a circular motion.
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Cooking in the microwave Radiation because nothing actually touches your food.
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Static shock from a doorknob Conduction because you had to touch the doorknob
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Toasting (not burning) a marshmellow Radiation because no touching
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Lava lamp bubbling Convection, because the heat of the lightbulb makes the bubbles rise and fall in a circle.
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