Question

why do the pieces of wax glued on an iron rod fall down automatically when heated on one end​

Answer 1

Explanation:

1) The drawing pin closest to the heat source will fall first as that wax will melt first. The drawing pin farthest to the heat source will fall last as that wax will melt last.

2) From this activity, we can conclude that heat travels through the hotter end to the colder end through a conductor.

Answer 2

The pieces of wax glued on an iron rod fall down automatically when heated at one end due to conduction.

• By the word conduction, we mean that the process that is responsible for the transmission of heat from one point to the another through the collision of molecules of the substance amongst themselves.
• When the iron rod is heated on one end, the heat energy is transferred from that end to the other end because of conduction and the other end also becomes heated up due to which the glued pieces of wax fall off by melting.