Question

On a hot day, the sun causes the sidewalk to become very warm. Which is a valid claim about how the particles that make up the sidewalk change as the temperature increases?

A) The particles move more slowly.
B) The particles move at the same speed.
C) The particles move randomly.
D) The particles move faster.

Answer 1

As the temperature increases, the particles that make up the sidewalk move faster.

Step-by-step explanation:

As the temperature increases, the particles that make up the sidewalk will move faster. When an object is heated, the energy is transferred to its particles, causing them to vibrate more vigorously. This increased motion leads to an increase in the average speed of the particles, resulting in a higher temperature of the sidewalk. The temperature of a substance is a measure of the average kinetic energy of its particles. In solids, such as the particles making up a sidewalk, the particles vibrate in fixed positions. As the temperature increases, the particles gain more energy, causing them to vibrate more vigorously and move slightly from their fixed positions.