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Earth Science · Weather & Climate

Weather Forecasting: Air Masses, Pressure & Fronts

Collect and interpret weather data to explain how moving air masses and fronts change local conditions and support probabilistic forecasts.

Lesson plan

Weather Forecasting: Air Masses, Pressure & Fronts

A step-by-step guide to help you teach this lesson.

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Lesson overview

What students will learn

  • Explain that air tends to move from higher-pressure regions toward lower-pressure regions and that air masses carry temperature and moisture characteristics.
  • Use changes in temperature, pressure, humidity, wind, and precipitation evidence to identify an approaching or passing air-mass boundary.

Key science ideas

  • Air tends to flow from regions of higher pressure toward regions of lower pressure.
  • Air masses can differ in temperature and moisture, and fronts form where different air masses meet.
  • When air masses interact, local temperature, pressure, humidity, wind, and precipitation can change over time.

Lesson at a glance

  • Grade 6
  • 55 min
  • ~10 min prep
  • MS-ESS2-5
  • 5 materials

What’s included

  • Lesson Plan
  • Investigation
  • Teacher Slides
  • Printable Worksheet
  • Teacher Answer Key
  • Interactive Activity
  • Vocabulary