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(they don't have science so I guess cemastry will do.)

warm air rises because of___

A student holds the back of his hand near an iron tosee if it's hot. The heat transfer is___

Warm water moves throuout a mattress because of___
In a swimmming pool The watter near the surface is warmer because of___
(i'll do the rest later)​​


Sagot :

warm air rises because of convection.

A student holds the back of his hand near an iron to see if it's hot. The heat transfer is conduction.

Warm water moves throughout a mattress because of ... why is there warm water in a mattress again? Convection, I guess.

In a swimming pool, the water near the surface is warmer because of convection and solar radiation; it's closer to the Sun than the bottom of the pool, so it receives more thermal radiation, making it warmer.