Question

Aluminum foil has a shiny side and a dull side. Many experts believe that the shiny side of the aluminum foil should face the food when you are using it to cover the food. What process would explain the reason why the shiny side should face the food?
A) conduction.
B) convection.
C) insulation.
D) radiation.

Answer 1

Answer: D) Radiation.

Explanation: The shiny side of the aluminum foil is better at reflecting electromagnetic waves or radiation, so if this side faced the other side, it will prevent some radiated heat to reach the food, which is counterproductive.

When this side faces the food, it also prevents the heat radiated from the food to leave it, so it is actually beneficial.

So the correct answer of why this side should face the food is option D) Radiation

Answer 2

Answer:

C

Explanation:

Insulation

Aluminum foil are really good at keeping the food warm because of its insulation property that it does not let the heat of food go out