Question

which of the following is an example of heat transfer through convection?
feeling heat from a campfire
water boiling
a metal spoon getting warm from being in hot water
none of the above

Explanation:

Convection is heat transfer by the movement of a fluid (liquid or gas). When water boils, the heated water near the heat - source becomes less dense and rises, while the cooler water sinks. This creates a convection current. Feeling heat from a campfire is radiation. A metal spoon getting warm in hot water is conduction.

Answer:

Water boiling