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Air Pressure
Air Pressure / Barometer / Things closest to Earth
14
Science
7th Grade
10/11/2012

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Cards

Term
Density
Definition
the amount of mass in a given volume of air
Term
pressure
Definition
the force pushing on an area of surface
Term
barometer
Definition
an instrument used to measure air pressure
Term
mercury barometer
Definition
consists of a glass tube open at the botton end particully filled with mercury
Term
aneriod barometer
Definition
has an airtight metal chamber
Term
altitude
Definition
elevation, distance above sea-level
Term
Things to know about pressure
Definition
the atmosphere is heavy and the forces or pressure of the air is what makes Earth balanced
Term
Things to know about barometers
Definition
  • mercury barameter- the greater the air pressure the more forces of the mercury
  • aneriod- is any barameter without liquid

 

Term
What affects air pressure?
Definition
when altitude is above sea-level and if altitude is affected, the air pressure becomes greater than sea-level
Term
Weather
Definition
A condition in Earths Atmosphere at a particular time and place
Term
Ozone
Definition
 A form of oxegen that has three oxegen atoms in each molecule instead of the usual two
Term
Atmosphere 
Definition
an envolope of gases that surronds the planet
Term
Water Vapor
Definition
 A water form of gas
Term

THANKS MOM FOR HELPING ME STUDY!!!

LOVE YOU AND NO ONE CAN REPLACE YOU

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