(a)[3]
Fill in the blanks with words that name the main process of thermal energy transfer in each case. A man goes for a walk on a cold day. He touches a metal gate, which removes thermal energy from his hands by [BLANK]. He holds the sides of a cup containing a hot drink. His hands gain thermal energy by [BLANK]. Some farm workers have lit a fire. The man warms his hands by the side of the fire. His hands gain thermal energy by [BLANK].
(b)[2]
Describe, in terms of particles, how thermal energy is passed through the metal of the gate after it has been transferred from the man's hands.
(c)[2]
Circle the most suitable material for the outer surface of object A. Give a reason for your choice. Options: dull black, dull white, shiny black, shiny white.