The warm air above the sea rises and the cool air above the land moves out to take its place and we have a land breeze (Figure 9.18). ... 3 Convection currents are caused by density changes. Hot ... QUESTIONS How does convection occur?
|Title||:||Sif Physics Ol Tb|
|Author||:||Wan Yong Loo, Kwok Wai Loo|
|Publisher||:||Pearson Education South Asia - 2007|