As the moisture-rich air approaches the mountain, it rises and cools, and water molecules in the air combine to form small drops. The process where water vapor becomes a liquid is called condensation.
Also called as the terrain is the variation that exists in the amount of the relief of the surface and difference is between the highest and lowest dimensions.
The relief can be shown of a topographic map and this represents the elevation for the vales reduced to the mean sea levels and thus shows the variations in height in terms of the contours on the land surfaces.
