Give a reason for each of the following:

1. Roaring forties and furious fifties are found in the Southern hemisphere.
2. Low atmospheric pressure prevails over the circum polar region.
3. Cyclones are always followed by anticyclones

1. Roaring forties and furious fifties are found in the Southern hemisphere because there is no obstruction in the path of the wind.
2. In the sub-tropical region the descending air gets divided into two parts. One part blows towards the Equatorial Low Pressure Belt. The other part blows towards the Circum-Polar Low Pressure Belt. This zone is marked by ascent of warm Sub-Tropical air over cold polar air blowing from poles. Due to earth's rotation, the winds surrounding the Polar region blow towards the Equator. Centrifugal forces operating in this region create the low pressure belt, known as Circum-polar low pressure belt.
3. Cyclones originate due to low pressure. It brings rain and with conclusion there is increase in humidity. It results in high pressure which leads to anticyclone. It happens mostly in case of Temperate cyclone.