Advection fog holds longest over which portions of the lakes?（）

The drift and set of tidal，river，and ocean currents refer to the（）.

The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the（）.

The length of a wave is the length（）.

Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.

On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds. This area is called the（）.

Ocean currents are well defined and（）.

In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）.

In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.

In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.