Chemistry! Hooray!

Chemistry! Hooray!

Tuesday 9 April 2013

Grade 7 Convection Notes and Eureka Video


Convection

·        Convection - The transfer of thermal energy by moving particles in fluids
·        As the particles of fluids (gases and liquids) are heated, they move faster and expand; this expansion makes the fluids less dense so they rise
·        When warmer fluids rise, cooler fluids move downwards; this creates a “convection current”
·        The convection current continues in a pot of soup because the warmer soup particles in a pot cool when they make contact with the air and then sink. These particles are heated again once they meet the bottom of the pot.
·        Convection currents help heat your home through your furnace heating system.

1 comment:

  1. Yes i cannot wait for the test i am bursting with excitement (not literally)and thank you for the notes. See you tomorow at period 2 bye

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