Question

1. A pot of boiling water is first headed at the bottom, and then as the warmer water rises and mixes, the
water is heated throughout. Which form of energy transfer is this?

Answer 1

Hot water on bottom of the pot rises, cooler water settles, creating a > Convection < form of heat xfer.

BTW:

The metal of the pot on a flame or electric element is heated by conduction.