🔍 Key Concepts

• Tropical cyclone classifications and their typical wind speed ranges • The meaning of closed isobars and rotary circulation on a weather chart • How the terms disturbance, depression, storm, hurricane differ in intensity

💭 Think About

• Which of the four choices is defined primarily by a specific wind speed range between 34 and 63 knots? • Do all four options have closed isobars and counterclockwise circulation, or are those features associated with a more developed system? • Which term is reserved for the strongest systems with winds above a certain threshold, and which is for the weakest, below a certain threshold?

✅ Before You Answer

• Match each classification to its official sustained wind speed range (in knots). • Confirm which categories are below 34 knots, which are 34–63 knots, and which are 64 knots and above. • Verify that the option you choose is the one whose upper and lower wind limits both fall within 34–63 knots.