A compact disc contains an extremely thin sheet of aluminum. If you put a larger block of metal in a microwave oven along with a CD and turn the oven on,
A) nothing significant happens.
B) only the metal will spark and then melt.
C) the metal will melt and the CD will spark.
D) only the CD becomes hot enough to soften and sparks dance about its surface..

Question

Quizplus · Accepted Answer

The CD contains a thin sheet of aluminum which, when microwaved, can cause sparks due to the metal reacting to the microwaves. This can lead to the CD becoming hot enough to soften. Larger blocks of metal in a microwave might not necessarily spark or melt as easily due to their size and the distribution of microwaves, but the thin metal in the CD will react more dramatically.

A Compact Disc Contains an Extremely Thin Sheet of Aluminum