Air pressure is the pressure exerted by the weight of air in all directions and can be measured using a barometer which indicates air pressure levels in millibars. Wind is caused by differences in air pressure as air moves horizontally from high to low pressure areas, with closely spaced high and low pressure lines on weather maps indicating steep pressure gradients and high winds. Global wind patterns are influenced by differences in surface and upper-level air pressure over sea and land areas.
This PowerPoint is one small part of the Weather and Climate unit from www.sciencepowerpoint.com. This unit consists of a five part 2500+ slide PowerPoint roadmap, 14 page bundled homework package, modified homework, detailed answer keys, 19 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow are meaningful. The PowerPoint includes built-in instructions, visuals, and review questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation.
Areas of Focus within The Weather and Climate Unit: -What is weather?, Climate, Importance of the Atmosphere, Components of the Atmosphere, Layers of the Atmosphere, Air Quality and Pollution, Carbon Monoxide, Ozone Layer, Ways to Avoid Skin Cancer, Air Pressure, Barometer, Air Pressure and Wind, Fronts, Wind, Global Wind, Coriolis Force, Jet Stream, Sea Breeze / Land Breeze, Mountain Winds, Mountain Rain Shadow, Wind Chill, Flight, Dangerous Weather Systems, Light, Albedo, Temperature, Thermometers, Seasons, Humidity / Condensation / Evaporation, Dew Points, Clouds, Types of Clouds, Meteorology, Weather Tools, Isotherms, Ocean Currents, Enhanced Global Warming, Greenhouse Effect, The Effects of Global Warming, Biomes, Types of Biomes. Difficulty rating 8/10.
This unit aligns with the Next Generation Science Standards and with Common Core Standards for ELA and Literacy for Science and Technical Subjects. See preview for more information
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Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
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2. Air Pressure Defined
19.1 Understanding Air Pressure
Air pressure is the pressure created by
the weight of air.
Air pressure is exerted in all directions—
down, up, and sideways.
3. Measuring Air Pressure
19.1 Understanding Air Pressure
A barometer is an instrument used for
measuring air pressure.
When air pressure increases, the mercury
in the tube rises. Measured in millibars
(mb) of mercury.
4. Factors Affecting Wind
19.1 Understanding Air Pressure
Wind is the result of horizontal differences
in air pressure. Air flows from areas of
higher pressure to areas of lower pressure.
• A pressure gradient is the amount of pressure
change occurring over a given distance.
• Closely spaced isobars—lines on a map that
connect places of equal air pressure—indicate a
steep pressure gradient and high winds.
