For every graduate of engineering, you must have gone through most of the courses I will list below, if not all. This courses are so important that it is near impossible to graduate without having a fair knowledge of them. 1) Thermodynamics : this is the study of heat and temperature in relation to energy and work. The desire to improve on the efficiency of steam engines lead to the development of this course. Terms such as enthalpy, entropy, energy and pressure will be used often in the said course. Thermodynamics have four basic laws, but this cannot be handled here. 2)FLUID MECHANICS : This has to do with the study of fluids (liquids and gases), it is divided broadly into two, FLUID STATICS and FLUID DYNAMICS. With the former taking care of fluids with no sheer stress( ie fluids at rest) and the latter handling fluids in motion. Base on flow, we have compressible and in compressible fluid whose difference lie in their rate of flow with density change. Two most common but very i