There are three heat zones . They are also called temperature zones or climatic belts as bounded by the five important latitudes and the poles .
Torrid or Tropical zone : it stretches between the Tropic of Cancer and the tropic of capricon . This region gets vertical rays of the sun throughout the year . It is a very warm zone also known as the Torrid zone .
Temperate zone : it lies in the northern hemisphere between the tropic of cancer and the arctic circle and another in southern hemisphere between the tropic of capricon and the antarctic circle .
Polar or Frigid zone : it lies between the arctic circle and the north pole and another in the southern hemisphere extending from the antarctic circle to the south pole.