Latitude lines help divide the earth into different climatic zones based on the amount of heat received from the Sun.
The region from the Equator to the Tropic of Cancer\((23½°N)\) in the northern hemisphere and from the Equator to the Tropic of Capricorn\((23½°S)\) in the southern hemisphere or in other words, the region between Tropic of Cancer and Tropic of Capricorn is said to be a Torrid Zone.
- Solar radiation or Sun's rays falls vertically over this region.
- Very high average temperature.
- Therefore, this region is known as the Torrid Zone.
Northern Hemisphere: From the Tropic of Cancer \((23½°N)\) to the Arctic Circle \((66½°N) \)
Southern Hemisphere: From the Tropic of Capricorn \((23½°S)\) to the Antarctic Circle \((66½°S)\)
- The Solar radiation or Sun's rays reaches the ground slantingly (i.e. inclined)
- Moderate temperature prevails in this region. Hence, this region is called the Temperate Zone.
Northern hemisphere: From the Arctic Circle \((66½°N) \)to the North Pole \((90°N) \)
Southern hemisphere: From the Antarctic Circle \((66½°S)\) to the South Pole \((90°S)\)
- The solar radiation or Sun's rays falls at a very small angle (nearly flat) throughout the year.
- The temperature is very low and freezing. Therefore, this region is known as the Frigid Zone.