HomeFrequently Asked Questions (FAQs)FAQs PhysicsFAQs Physics: Transfer of Thermal Energy FAQs Physics: Transfer of Thermal Energy 1274 ~ Some ice cubes are added to a glass of water at room temperature. Describe in terms of density changes, how convection currents occur in the water to cause the water to cool down faster. ~ Describe in molecular terms, how thermal conduction occurs in a solid rod when one end of the rod is heated. ~ Define thermal conduction. ~ Define thermal convection. ~ Define thermal radiation.