Question

The atoms in a sidewalk on a hot summer day are vibrating _____ the atoms in the sidewalk on a freezing day in winter.
A. more rapidly than
B. more slowly than
C. at the same speed as

Answer 1

Answer:

(A) more rapidly than

Explanation:

With higher temperatures, object's molecules (and atoms) have higher kinetic energy which is due to faster "jiggling" (vibrations). On a hot day these vibrations in the material the sidewalk is made of are more rapid than on a cold day, just as their temperatures differ.

Answer 2

Answer:

A. more rapidly than

Explanation:

Cause on a cold day particles move slower and vise versa