Using a curling iron to curl hair exemplifies conduction, a process where heat transfers through direct contact, unlike convection or radiation which involve fluids and electromagnetic waves, respectively.
Using a curling iron to curl your hair is an example of conduction. Conduction is the process where heat is transferred through direct contact between materials.
When the heated metal barrel of the curling iron touches your hair, heat is transferred from the iron to your hair strands.
This direct contact causes the hair to absorb heat energy and change shape, resulting in curls.
Conduction is distinct from convection, which involves the transfer of heat through a fluid (like air or water) moving from one place to another, and radiation, which involves the transfer of heat through electromagnetic waves without the need for a medium, like when the sun warms your skin.