heat is transferred in 3 ways: conduction – touching the heat source convection – being warmed...
TRANSCRIPT
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How is heat transferred?
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Heat is transferred in 3 ways:Conduction – touching the heat source Convection – being warmed by the heat
coming in waves Radiation – being warmed by the energy
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You can understand all 3 types of heat transfer by using only a few examples:
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Conduction Touch
The marshmallow is touching
the fire
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Convection Heat waves
The pig is cooking because of the hot air rising
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Radiation Energy
They are staying warm because of the heat energy moving from the fire to them.
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Conduction When the fire breathing dragon breathes ON the hot dog it is burnt!
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Convection When the fire breathing dragon breathes NEAR the hot dog it gets cooked.
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Radiation When the fire breathing dragon breathes CLOSE TO the hot dog it is warmed.
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Conduction When the flame TOUCHES the pan, the pan heats up.
When the water TOUCHES the pan, the water gets hot.
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Convection When the water gets hot it rises in WAVES to the top of the pan and heats the rest of the water and vegetables.
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Radiation When the flame is low, the heat energy TRANSFERS to the pan, and the pan heats up.
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Conduction When the flame TOUCHES the
hot dog, the hot dog burns.
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Convection When the flame RISE up in WAVES near the hot dog, the hot dog cooks, but doesn’t burn.
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Radiation When the hot ENERGY from the flame RISE up the food cooks, but doesn’t burn.
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So, how does all of this apply to the Earth?
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The convection currents in the Earth’s mantle rise up and push the plates around.
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Notice how the plates are being PUSHED apart
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Notice how the magma is rising
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Now, you can see the convection currents in the mantle