Question:

a) Describe wet bulb thermometer and wet bulb temperature.

b) What happens to the volume of a rising parcel of air and of a sinking parcel of air?

c) What do you understand by stable and unstable equilibrium when referring to a parcel of air?

d) List important greenhouse gases in the atmosphere? What is their composition either by percentage volume or by percentage mole fraction?

e) List at least four types of fog. Which one do we usually have in Mauritius and in which locations?

f) List the characteristics of a cumulonimbus cloud

g) What is a thermal circulation? Provide examples of thermal circulations.

h) What causes our seasons? What do you understand by the term perihelion and aphelion