🔍 Key Concepts

• High pressure system and associated weather characteristics • Relationship between air pressure and positions of high and low pressure on a weather map • How a barometer behaves as pressure areas move toward or away from your position

💭 Think About

• When a high pressure system is approaching your location, is the air pressure at your position increasing or decreasing compared to before it arrives? • On a surface weather chart, how does the pressure at the center of a high compare to the surrounding area? What does that imply for barometer readings as that high moves toward you? • Think about the usual barometer trend before fair, settled weather moves in. What kind of pressure change typically precedes it?

✅ Before You Answer

• Be clear on which systems give higher-than-average pressure and which give lower-than-average pressure • Recall whether fair, settled weather tends to be associated with rising or falling barometer readings • Check that your chosen option matches the trend over time (steady, rising, slowly falling, rapidly falling), not just a single moment reading