METEOROLOGY QUESTION PAPERS FOR RESIT EXAMINATION IN MARCH 2004

Q 1(a)A vessel heading a course of 250(T) at a speed of 15 kts. An apparent wind was observed from a direction of 320 (T) at 10 kts.What is the direction and speed that you enter in the log book.(10 marks ).

(b) Explain how the following forces act with regard to wind; Geostrophic force (10 marks) Gradient force (10 marks)

Q 2(a) With the aid of sketches explain the following; Absolutely unstable condition (8 marks) Absolutely stable condition (8 marks) Conditionally stable condition (8 marks) Neutral equilibrium (6 marks)

Q 3 (a) Describe the warning signs of an approaching TRS. (10 marks)(b) Explain how you would decide the location of the vessel with

relation to the TRS in NH & SH. (10 marks ) (c) What is your avoiding action when the vessel is in NH

(10 marks)Q 4 (a) Define air mass and a front (5 marks)

Explain in detail with the suitable sketches the life cycle of a frontal depreression (15 marks)

Q 5 (a) What is the principle of Aneroid Barometer (4 marks)(b) Draw and name the parts of a simple Aneroid Barometer (c) (8 marks)

(c ) Describe how it works(8 marks) (d) An Aneroid barometer has an IE of + 2 .0 hpa . It reads 1012.5

hpa at a latitude of 20 00 N, 140 .00 E. The instrument was located at a height of 20 meters from sea level.What is the reading that you enter in the log book. (8 marks )

Q 6 (a) Differentiate mist, fog and clouds (8 marks)(b) Explain how advection fog is formed and where you encounter

(12marks)