Heat Transfer: Conduction, Convection, Radiation

What is conduction?

• Transfer of heat through electromagnetic waves

• Transfer of heat through direct contact of particles

• Transfer of heat through fluid motion

• None of the above

Which material is the best conductor of heat?

• Wood

• Plastic

• Copper

• Glass

Which of the following does NOT affect the rate of conduction?

• Temperature difference

• Thickness of the material

• Color of the material

• Type of material

What is convection?

• Heat transfer by the movement of fluids

• Heat transfer through electromagnetic waves

• Heat transfer by direct contact of particles

• None of the above

In convection, heat transfer occurs in which states of matter?

• Solids only

• Liquids only

• Gases only

• Liquids and gases

Which of the following is an example of convection?

• Boiling water in a pot

• Heating a metal rod

• Feeling the warmth of sunlight

• Touching a hot iron

What is radiation?

• Heat transfer through a vacuum via electromagnetic waves

• Heat transfer through fluids

• Heat transfer through direct contact

• None of the above

Which of the following objects is the best emitter of radiation?

• Shiny metal surface

• Black surface

• Transparent glass

• White surface

Which statement about radiation is true?

• It requires a medium to transfer heat.

• It cannot occur in a vacuum.

• It is the primary way the sun's energy reaches the Earth.

• It only occurs in solids.

Which of the following processes is responsible for heating the Earth’s surface?

• Conduction

• Convection

• Radiation

• None of the above