Methods of Heat Transfer

Which of the following is NOT a method by which heat can be transferred?

• Conduction

• Convection

• Radiation

• Insulation

What is conduction in the context of thermal energy transfer?

• The movement of energy through a vacuum.

• The process where heat is transferred from one particle of matter to another within an object or between two objects.

• The emission of heat in the form of electromagnetic waves.

• The transfer of heat through a fluid by the movement of the fluid itself.

Which material is mentioned as a very good thermal conductor?

• Aluminum

• Steel

• Copper

• Plastic

What happens when a copper tube is heated in terms of conduction?

• The copper tube melts immediately.

• The heat is uniformly distributed throughout the tube without movement.

• Heat travels through the copper tube from one molecule to the next.

• The copper tube becomes an insulator.

Which of the following materials is considered a good conductor of heat?

• Wood

• Polystyrene

• Copper

• Still Air

What property do good thermal conductors also have according to the text?

• They are good insulators

• They are good electrical conductors

• They are highly malleable

• They are transparent

Which material listed is a bad conductor of heat?

• Iron

• Aluminium

• Glass

• Copper

What is required for convection to occur according to the text in the image?

• A) A solid medium

• B) A vacuum

• C) A fluid or gas

• D) High pressure environment

What happens to the molecules in a fluid or gas during convection?

• A) They remain stationary

• B) They expand and contract

• C) They rise when heated and fall when cooled

• D) They dissolve into smaller particles

What is the mode of heat transfer described as the movement of heat via infrared light, from one body to another without heating the space in between?

• Conduction

• Convection

• Radiation

• Insulation