| A | B |
|---|
| Kinetic energy | The energy an object has because of its motion |
| Kinetic theory | States that all matter consists of tiny particles that are in constant motion |
| Gas pressure | Results from the force exerted by a gas per unit surface area of an object. |
| Vacuum | An empty space with no particles and no pressure |
| Atmospheric pressure | The collisions of atoms and molecules in air with objects |
| Barometer | A device used to measure atmospheric pressure |
| Pascal (Pa) | The SI unit of pressure |
| Standard atmosphere (atm) | The pressure required to support 760 mm of mercury in a mercury barometer at 25°C.25°C. |
