When an iron ring is heated, the hole becomes
A)smaller.
B)larger.
C)neither smaller nor larger.
D)either smaller or larger, depending on the ring thickness.

Question

Quizplus · Accepted Answer

When the iron ring is heated, its molecules gain energy and they start vibrating rapidly. Due to this rapid movement of molecules, the space in between them increases and the iron ring expands. As a result, the hole in the iron ring becomes larger.

When an Iron Ring Is Heated, the Hole Becomes