Frying a pancake involves both conduction and convection heat transfer. Conduction occurs through direct contact between the pancake and the hot pan, while convection occurs as the hot oil or butter transfers heat to the pancake surface through movement and circulation.
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The three types of heat transfer are conduction, convection, and radiation. Conduction is the transfer of heat through direct contact of particles. Convection is the transfer of heat through the movement of fluids or gases. Radiation is the transfer of heat through electromagnetic waves.
Conduction, which is the transfer of heat through direct contact between particles, cannot take place in a vacuum because there are no particles present to transfer the heat.
Toasting marshmallows is an example of heat transfer through convection. The heat from the fire warms the air, which then rises and carries the heat to the marshmallow, cooking it evenly.
When your hand is on a heat pad, heat transfer is occurring through conduction. This is because the heat from the pad is being directly transferred to your hand through physical contact.
The heat transfer process exemplified by heat traveling through a pan to warm food is known as conduction.