Air pressure definition is - pressure exerted by air:. How to use air pressure in a sentence.
What is Air Pressure. Sea level air pressure. The greatest air pressure pressing down on our bodies is at sea level. Scientists use the term one atmosphere to describe the pressure at sea level. Normal pressure at sea level is 14.7 psi (pounds per square inch). Normal pressure at sea level measures 29.9213 inches (760 mm) on barometers.
Low Pressure. A low pressure area is the opposite of a high pressure area. Since air pressure, or the hand in our illustration, is NOT exerting a lot of pressure, air molecules are able to float ...
Air pressure definition, the force exerted by air, whether compressed or unconfined, on any surface in contact with it. See more.
Atmospheric pressure is the force pushing against objects from the weight of the air above it. Come learn about atmospheric pressure, why it doesn't crush you, why we measure it, and some other ...
The needle points to numbers on the dial, which show air pressure. Dial. The numbers on this dial measure air pressure. Low pressure often signals that rain and storms are coming, while high pressure often means sunny days and calm weather. Barometer. A barometer is a machine for measuring air pressure. It is a sealed box with a spring inside.
Blow hard into the space between the balloons. This lowers the air pressure. The pressure of the surrounding air is now higher and it will push the balloons together. [Adapted from “Top Ten Air Pressure Experiments to Mystify Your Kids-Using Stuff From Around the House,” by Aurora Lipper, for Mechanical Engineering, January 2008.]
The atmosphere that surrounds Earth has weight and pushes down on anything below it. The weight of air above a given area on Earth’s surface is called atmospheric pressure. It is an important factor influencing Earth’s weather and climate. Atmospheric pressure can be measured with an instrument called a barometer and thus is also known as barometric pressure.
Air pressure is often measured with a device called a barometer. Most barometers today measure air pressure in millibars. Changes in the air pressure are important for weather forecasters because they can indicate changes in the weather. Activities Take a ten question quiz about this page. More Physics Subjects on Motion, Work, and Energy