Heat transfer

What is the transfer of heat by direct contact?

• Conduction

• Convection

• Radiation

• Insulation

What is the transfer of heat by movement of liquids or gases?

• Conduction

• Convection

• Radiation

• Insulation

What is the method of heat transfer that occurs in fluids (liquids and gases)?

• Conduction

• Convection

• Radiation

• Insulation

What is an example of conduction in everyday life?

• Touching a hot stove.

• Boiling water in a kettle.

• Feeling the warmth of the sun on your skin.

• Using a microwave to heat food.

What type of heat transfer does not require a medium?

• Conduction

• Convection

• Radiation

• Insulation

What are waves that can transfer heat through the vacuum of empty space?

• Sound waves

• Mechanical waves

• Electromagnetic waves

• Water waves

What is the relationship between temperature and heat transfer?

• Heat flows from low temperature to high temperature.

• Heat flows from high temperature to low temperature.

• Temperature has no effect on heat transfer.

• Heat transfer occurs only at constant temperature.

Heat transfers from an area of ________temperature to an area of ______ temperature.

• low to high

• high to low

• equal to equal

• low to equal

What happens to the density of air when it is heated?

• It decreases.

• It increases.

• It remains the same.

• It becomes unpredictable.

What is the term for the transfer of heat through a fluid due to the movement of the fluid itself?

• Conduction

• Convection

• Radiation

• Insulation