Physics - energy transfer by heating

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  • Created by: Jenny
  • Created on: 18-05-13 15:02
name the 3 energy transfers?
conduction, convection and radiation
1 of 12
what does conduction take place in?
a solid
2 of 12
what does convection take place in?
liquids and gases
3 of 12
what does radiation not need to take place that conduction and convection do?
particles
4 of 12
how does the energy transfer in a solid?
by conduction and the particles are heated and they gain energy, they vibrate and collide transferring the energy
5 of 12
what makes metals good conductors?
their free electrons
6 of 12
how does the energy transfer in a liquid?
the particles gain energy when they are heated and they move faster and further apart. this causes the volume to increase and the density to decrease. the less dense air rises, taking the heat with it
7 of 12
what are the factors that affect the rate of evaporation?
the surface area of the liquid is increased or if air is moving over the surface of the liquid.
8 of 12
what are the factors that affect the rate of condensation?
The rate of condensation increases if the temperature of the gas is decreased
9 of 12
what is the cooling effect when something is evaporating?
when something is evaporating, the thing it is evaporating from cools down
10 of 12
what does the rate at which an object transfers energy depend on?
surface area and volume and the material from which an object is made
11 of 12
what makes the transfer of energy faster between an object and its surroundings?
the bigger the temperature difference between them
12 of 12

Other cards in this set

Card 2

Front

what does conduction take place in?

Back

a solid

Card 3

Front

what does convection take place in?

Back

Preview of the front of card 3

Card 4

Front

what does radiation not need to take place that conduction and convection do?

Back

Preview of the front of card 4

Card 5

Front

how does the energy transfer in a solid?

Back

Preview of the front of card 5
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