Question

3
heat transfer from water at the bottom of a pot to water at the top is an example of
conduction dark blue convection red radiation yellow
4
the warmth you feel sitting next to a fire is due to
conduction pink convection dark blue radiation orange
5
if you place 3 spoons into hot water, one wood, one plastic, and one metal, which spoon would be most likely to transfer the heat of the water?
metal light blue wood pink plastic light green

Explanation:

• Question 3: Convection is the transfer of heat through the movement of fluids (liquids or gases). In a pot of water, the heated water at the bottom becomes less dense and rises, while the cooler water at the top sinks. This circular motion (convection current) transfers heat from the bottom to the top of the pot.
• Question 4: Radiation is the transfer of heat in the form of electromagnetic waves (infra - red radiation, in the case of heat from a fire). It does not require a medium (unlike conduction and convection). When sitting next to a fire, the warmth is felt due to the absorption of this radiant heat.
• Question 5: Metals are good conductors of heat. They have free electrons that can easily transfer kinetic energy (heat). Wood and plastic are insulators (poor conductors) as their molecular structures do not allow for easy heat transfer.

Answer:

• Question 3: convection (RED)
• Question 4: radiation (ORANGE)
• Question 5: metal (LIGHT BLUE)