Tropical Cyclones is one of 8 topics in the Grade 12 Geography CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. A tropical cyclone requires a minimum sea surface temperature of approximately:
26,5 degrees Celsius
10 degrees Celsius
0 degrees Celsius
40 degrees Celsius
Answer: 26,5 degrees Celsius — A sea surface temperature of at least 26,5 degrees Celsius (to a depth of about 50 m) is required to provide enough heat and moisture to fuel a tropical cyclone.
Easy
2. The calm, clear centre of a mature tropical cyclone is called the:
Eye
Eyewall
Rain band
Trough
Answer: Eye — The eye is the calm, often clear centre of a mature tropical cyclone, with the lowest pressure in the system.
Medium
3. What ring-shaped feature surrounding the eye contains the most intense thunderstorms and strongest winds in a tropical cyclone?
Answer: The eyewall — The eyewall is the ring of intense thunderstorms and the strongest winds immediately surrounding the calm eye.
