Heat transfer

Front

What is conduction in heat transfer?

Back

Conduction is the process of heat transfer through direct contact between materials that are touching.

Front

What type of heat transfer occurs when heat is emitted from a heat lamp to warm baby chickens?

Back

Radiation is the type of heat transfer demonstrated when heat is emitted from a heat lamp.

Front

What is required for convection to occur?

Back

Convection requires a fluid or gas to facilitate the transfer of heat.

Front

Describe the process of convection as seen in a lava lamp.

Back

In a lava lamp, the wax is heated by a light bulb, causing it to rise. When the wax cools, it falls, creating a cycle of rising and falling, which is an example of convection.

Front

In which direction does heat transfer occur?

Back

Heat transfers from an area of high temperature to an area of low temperature.

Front

What is the definition of radiation in the context of heat transfer?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

Front

How does convection differ from conduction?

Back

Convection involves the movement of fluids or gases to transfer heat, while conduction involves direct contact between materials.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of boiling water.

Front

What role does temperature difference play in heat transfer?

Back

Temperature difference drives heat transfer, with heat moving from areas of higher temperature to areas of lower temperature.

Front

What is the significance of thermal conductivity in conduction?

Back

Thermal conductivity is a measure of a material's ability to conduct heat; materials with high thermal conductivity transfer heat more efficiently.