Transfer of Heat

What are the three ways of heat transfer?

• A) Conduction, Convection, and Evaporation

• B) Conduction, Convection, and Radiation

• C) Conduction, Radiation, and Evaporation

• D) Convection, Radiation, and Evaporation

What is the process of heat transfer in solids called?

• Convection

• Conduction

• Radiation

• Evaporation

Which of the following is a good conductor of heat?

• 
• 
• 
• 

What happens when heat is supplied to a substance?

• A) It expands

• B) It contracts

• C) It remains the same

• D) It changes colour

Draw an example of convection on your own.

What is the form of heat transfer from places of high temperature to places of low temperature by the actual movement of molecules called?

• Conduction

• Convection

• Radiation

• Evaporation

How does heat energy from the Sun reach the Earth?

• By convection

• By conduction

• By radiation

• By evaporation

What is the colour of the radiation when a substance is heated further after 500°C?

• Red

• Orange

• Yellow

• All of the above

What happens when a substance is heated to 500°C?

• It boils

• It melts

• It becomes visible to the eye as a dull red glow

• It disappears

What is the process of heat transfer that takes place in empty space or vacuum?

• Evaporation

• Radiation

• Convection

• Conduction