Question

5. To keep your lunch cold at the beach, would you want a material

Answer 1

Answer:

Minimizes heat transfer

Explanation:

To keep my lunch from getting cold at the beach, a material the minimizes heat transfer will be the most desirable.

• Such material should be modified to prevent had transfer by convection, conduction and radiation.
• This kind of material is desirable because heat generally flows from a place of high amount to that of low amount.
• Since the food will mostly have a temperature higher than the ambient one, it is expected that heat will flow away from the food to the environment.
• This will make the food cold.
• If such heat transfer is prevented, then, the food will remain hot.