8
lesson pretestMultiple Choice

Pretest

Question 8 • Physical Science

Which best explains why metal cooking utensils often have plastic coating on their handles?

Answer
A
Plastic molds more easily into shapes like long, thin handles.
B
Plastic increases the rate of conduction from the utensil to the food.
C
Plastic reduces the transfer of thermal energy to hands holding the utensils.
D
Plastic melts less easily and lasts longer than metal.

Explanation

Metal conducts thermal energy well, so heat from the cooking utensil can travel along its handle and burn someone’s hand. Plastic is a poor conductor of heat, so a coating reduces the transfer of thermal energy to the person holding it. Therefore, the best choice is “Plastic reduces the transfer of thermal energy to hands holding the utensils.”

AI-written and checked against the verified answer.

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