A student checks the air pressure in her bicycle tires early in the morning when it is cool outside. If she measures it again later in the day when it is hotter, what will she most likely observe?

As the air inside the tire warms, its molecules move faster and collide with the tire walls more forcefully. Since the tire’s volume changes very little, the pressure most likely increases. The correct choice is “The pressure has increased.”

AI-written and checked against the verified answer.