Category: O level Geography

Water and wind are important agents in landform development. They shape different landforms and modify the landscape.

Climate change is a shift in the average weather conditions experienced by a given area to new weather patterns that last for a few decades. Areas which used to receive high rainfall may start to experience low rainfall amounts and frequent droughts.

A tropical cyclone is a low pressure system which develops over oceans in tropical regions. Since they are low pressure systems, they are shown on a map by circular or  oval  closed  isobars. The  low  pressure  is  at  the  center.

When two different air masses meet they do not mix but they remain separated by a zone called a front. A front is therefore a boundary or zone separating two air masses. For example, when the tropical and polar air masses meet, they do not mix but they form a front between them.

Weather is the daily condition of the atmosphere at a particular place and time whereas climate is the average weather conditions for an area observed over a long period of time of about 30 to 40 years.