Final answer:
Air moves faster between two places when there is a greater pressure difference.
Step-by-step explanation:
When there is a difference in pressure between two places, air will move from the higher pressure to the lower pressure area. The greater the pressure difference, the faster the air will move. For example, when a car passes a truck on a highway, air passing between the vehicles flows in a narrower channel and must increase its speed, causing the pressure between them to drop. This greater pressure on the outside pushes the car and truck together.
Learn more about air pressure