- Offer pupils a mixed-up written explanation of what they have just seen, including reference to energy transfer, and ask them to sequence it chronologically to describe convection currents.
- Remind pupils that in a solid the particles are closely packed, while in fluids they can move past each other. Encourage them to speculate how the absorption of heat by fluids will cause movement of these particles.
- Present a model in which some pupils acquire energy,
eg coloured paper resembling banknotes, from the source at the front of the room. Explain that those with the most money move fastest, but when they meet the others they give money away. So pupils move from the source towards the back of the classroom (top of the container) distributing money/energy on the way. Others take their place to be provided with energy until they are all warm.
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- produce coherent text explaining how a convection current transfers heat
- work with others to simulate convection,
eg describe their role as a particle gaining and losing energy
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