🔍 Key Concepts

• General cloud classification system used in basic meteorology • Difference between cloud height (altitude) and other properties like thickness or moisture • How clouds are grouped on standard weather charts and pilot/sea-level observations

💭 Think About

• Think about what you most often hear when people describe cloud types in forecasts (for example, low, middle, or high). Which choice matches that idea? • Ask yourself which of these characteristics is easiest to observe and organize from the surface or from ships without special instruments. • Consider how cloud groups like cirrus, alto-, and stratus are commonly distinguished from each other—what main feature separates these groups?

✅ Before You Answer

• Verify which option is tied to vertical position in the atmosphere rather than an internal property of the cloud. • Eliminate any choices that would be difficult to measure at sea without instruments (for example, exact moisture content). • Check which answer best matches how clouds are shown in marine forecasts and synoptic charts (low, middle, and high groups).