Creative Science Centre
Creative Science Centre: Air Pressure, Manometers, Barometers and Altimeters
Explains what manometers, barometers, and altimeters are and how they are used to measure air pressure.
University of Illinois
University of Illinois Extension: Ww2010: Atmospheric Pressure
This site from the University of Illinois describes what air pressure is and how it is measured. Explains high and low pressure areas, isobars, and how pressure changes with height.
TeachEngineering
Teach Engineering: Air Under Pressure
Students are introduced to air masses, with an emphasis on the differences between and characteristics of high - versus low-pressure air systems. Students also hear about weather forecasting instrumentation and how engineers work to...
OpenStax
Open Stax: Gauge Pressure, Absolute Pressure, and Pressure Measurement
From a chapter on Fluid Statics in a Physics textbook. This section of the chapter looks at the definitions of gauge pressure and absolute pressure, and how barometers work. It also discusses how blood pressure is measured. Includes...
Utah Education Network
Uen: What Is a Barometer?
Learn about the barometer and how it helps to predict the weather.
Science Buddies
Science Buddies: Measure the Pressure
Scientists have developed an instrument called a barometer that can measure atmospheric pressure. In this activity, you will find out how a barometer works by building one yourself.
TeachEngineering
Teach Engineering: Weather Basics
Students are introduced to the basics of the Earth's weather. Concepts include fundamental causes of common weather phenomena such as temperature changes, wind, clouds, rain and snow. The different factors that affect the weather and the...