🔍 Key Concepts

• Aneroid barometer construction and what it measures • Difference between measuring air pressure, wind, and wave height • How changes in the measured quantity relate to approaching storms or weather systems

💭 Think About

• Ask yourself: What is the primary physical quantity that a barometer is designed to measure? • Which of the options describes something that would change as high- and low-pressure systems move through an area? • Which choices are actually describing other instruments used in weather observation (like for wind speed or wave height)?

✅ Before You Answer

• Identify which option mentions pressure rather than direction, speed, or height • Eliminate any choice that describes wind-related measurements • Eliminate any choice that involves wave characteristics, since that is not what a barometer is for