Atmospheric press

The air about you has weight, and also it presses versus everything the touches. That push is called atmospheric pressure, or wait pressure.

You are watching: The weight of air pushing on an area


For the complete encyclopedic entry through media resources, visit: http://www.lifwynnfoundation.org/encyclopedia/atmospheric-pressure/


This list the logos of program or partners of NG education and learning which have listed or contributed the contents on this page.

Powered by

*


The air roughly you has actually weight, and it presses versus everything the touches. That press is referred to as atmospheric pressure, or air pressure. It is the force exerted ~ above a surface by the air above it as gravity pulls it come Earth. Atmospheric pressure is generally measured through a barometer. In a barometer, a tower of mercury in a glass tube rises or falls as the weight of the setting changes. Meteorologists describe the atmospheric pressure by exactly how high the mercury rises. An environment (atm) is a unit the measurement same to the median air pressure at sea level at a temperature that 15 levels Celsius (59 levels Fahrenheit). One environment is 1,013 millibars, or 760 millimeter (29.92 inches) of mercury.Atmospheric pressure drops together altitude increases. The atmospheric pressure on Denali, Alaska, is about fifty percent that the Honolulu, Hawai"i. Honolulu is a city at sea level. Denali, additionally known together Mount McKinley, is the greatest peak in phibìc America.As the press decreases, the amount of oxygen accessible to breathe likewise decreases. At very high altitudes, atmospheric pressure and accessible oxygen get so short that human being can become sick and even die. Hill climbers use bottled oxygen once they ascend really high peaks. They likewise take time to obtain used to the altitude because quickly moving from greater pressure to lower pressure can reason decompression sickness. Decompression sickness, likewise called "the bends", is likewise a difficulty for scuba divers who come to the surface too quickly. Aircraft create fabricated pressure in the cabin therefore passengers remain comfortable when flying.Atmospheric push is an indicator that weather. Once a low-pressure device moves into an area, it generally leads to cloudiness, wind, and precipitation. High-pressure systems usually lead to fair, patience weather.


Vocabulary

Term part of Speech meaning

air

noun

layer of gases surrounding Earth.

aircraft

noun

vehicle able to travel and operate over the ground.

air pressure

noun

force pressed on an object by air or atmosphere.

altitude

noun

the distance above sea level.

atmosphere (atm)

noun

(atm) unit that measurement same to air push at sea level, about 14.7 pounds per square inch. Also called traditional atmospheric pressure.

atmospheric pressure

noun

force per unit area exerted by the massive of the atmosphere as heaviness pulls it come Earth.

barometer

noun

an tool that procedures atmospheric pressure.

Celsius scale

noun

scale for measuring surface temperature, used by many of the world, in i beg your pardon the boiling point of water is 100 degrees.

cloud

noun

visible massive of tiny water droplets or ice cream crystals in Earth"s atmosphere.

decompression sickness

noun

serious condition resulting native gases developing tiny bubbles in the bloodstream as a body adjusts come a significant change in atmospheric pressure. Additionally known as DCS, divers disease, and also the bends.

exert

verb

to force or pressure.

Fahrenheit scale

noun

scale for measuring surface ar temperature supplied by Belize, Liberia, Myanmar, and the unified States.

force

noun

power or power that activates movement.

gravity

noun

physical force through which objects attract, or pull toward, every other.

high-pressure system

noun

weather pattern identified by high waiting pressure, typically as a result of cooling. High-pressure systems room usually connected with clear weather.

low-pressure system

noun

weather pattern identified by short air pressure, commonly as a an outcome of warming. Low-pressure systems space often linked with storms.

mercury

noun

chemical aspect with the prize Hg.

mercury barometer

noun

tool that determines atmospheric press by measuring exactly how much mercury move in a glass tube.

meteorologist

noun

person who researches patterns and changes in Earth"s atmosphere.

millibar

noun

(mbar) unit of push equal come .001 bar the atmospheric pressure.

oxygen

noun

chemical aspect with the symbol O, who gas form is 21% the the Earth"s atmosphere.

precipitation

noun

all develops in which water drops to planet from the atmosphere.

scuba

noun, adjective

(self-contained underwater breath apparatus) portable device for breathing underwater.

sea level

noun

base level because that measuring elevations. Sea level is determined by measurements taken over a 19-year cycle.

weather

noun

state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and also cloudiness.

See more: The Goby Fish And Shrimp Symbiotic Relationship Between Gobies And Pistol Shrimp

wind

noun

movement of wait (from a high pressure zone to a low pressure zone) led to by the uneven heater of the earth by the sun.