Utah Education Network
Uen: Discovering Earth's Air Pressure
Understand the existence of air pressure on earth.
Utah Education Network
Uen: The Changing Life of Air Pressure
Activity demonstrates how heating air will cause air to rise and become a low-pressure area.
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.
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...
PBS
Pbs Learning Media: Discovering Air
Our understanding about the air we breathe has changed dramatically through time. This illustrated timeline from the NOVA Web site tracks the changing thought on air and the creation of the Periodic Table of the Elements.
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...
University Corporation for Atmospheric Research
Ucar: How Weather Affects Air Quality
How is air pollution affected by weather? Some types of pollution are worse in the summer heat, while others are worse in cold winter weather.
Oklahoma Mesonet
University of Oklahoma: High and Low Pressure
This University of Oklahoma meteorology tutorial explores both high and low pressure systems--how they form and the different forms they take.
Oklahoma Mesonet
Oklahoma Climatological Survey: Air Masses
This Oklahoma Climatological Survey explores how air masses form, as well as the weather formations, which tend to appear on the edges of these masses in what is known as a front.
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.
Science Bob Pflugfelder
Science Bob: Make a Cartesian Diver!
This site presents a procedure for creating a cartesian diver, a miniature submarine which rises or sinks depending upon the water pressure within a closed bottle. The site also introduces basic concepts of water and air pressure.
Sophia Learning
Sophia: Bill Nye Demonstration: Crushing a Can With Air
Discover the effects of water vapor, the form water takes on as a gas, when it undergoes changes in atmospheric pressure as Bill Nye the Science Guy provides a demonstration of the compound water.
CPALMS
Florida State University Cpalms: Florida Students: How's the Weather?
A tutorial that describes the five factors that determine the weather in a particular place and time. The factors discussed in this tutorial are air temperature, air pressure, humidity, wind, and precipitation. A PDF file of the tutorial...
University of St. Andrews (UK)
University of St. Andrews: Climate and Weather Systems
This online lecture covers topics of air pressure, density and temperature.
Vision Learning
Visionlearning: Earth Science: Earth's Atmosphere: Composition and Structure
Instructional module focusing on Earth's atmosphere. Discussion includes major components, layers, air pressure, and scientific monitoring of the atmosphere. Site also includes an interactive practice quiz and links relating to the topic.
University Corporation for Atmospheric Research
Ucar: What Is Weather?
Weather is the mix of events that happen each day in our atmosphere. Learn how weather events are controlled by air pressure, how Meteorologists predict the weather and the difference between weather and climate.
Science Struck
Science Struck: Working Principle, Types, Applications of a Manometer
A manometer is used to measure the pressure of a gas or fluid. This article explains the principle behind the working of manometers, the different types, and how they are used. Formulas used to calculate pressure are also given.
Other
Chemical Reax/exothermic Reactions
A wonderfully complete primer on exothermic reactions in the context of chemical spills. Covers Reactions with Air or Water, Combustible Organics, Polymerization Reax, Decomposition, Corrosion, and much much more.
TeachEngineering
Teach Engineering: Hovercraft Racers!
Students gain first-hand experience on how friction affects motion. They build a hovercraft using air from a balloon to levitate a craft made from a compact disk (CD), learning that a bed of air under an object significantly reduces the...
NASA
Nasa: Gas Properties Definitions
Use this site to learn about basic gas properties including motion, viscosity, and compressibility. Includes links to activities for all ages.
National Snow and Ice Data Center
National Snow and Ice Data Center: Factors Affecting Arctic Weather and Climate
An introduction to the factors that affect the Arctic's weather and climate: latitude, land/sea distribution, solar radiation, air temperature, air pressure, winds, humidity, clouds, and precipitation.
Encyclopedia of Earth
Encyclopedia of Earth: Local and Regional Wind Systems
Read about regional and local wind systems, including information on changes in atmospheric pressure, thermal energy in the atmosphere, sea and land breezes, mountain and valley breezes, and monsoon winds.
Libre Text
Libre Text: Pressure Gradients
From high school geography class, you may remember that "air tends to flow from high pressure to low pressure". To understand why this happens, it is key to realizing that gasses (but also liquids) exert a force on their surroundings...
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