This document discusses the important lines of latitude that divide the Earth into regions. It identifies the Equator, Tropic of Cancer, Tropic of Capricorn, Arctic Circle, and Antarctic Circle as key parallels. The Earth is also divided into three heat zones: the Torrid Zone between the Tropics which receives maximum heat; the Temperate Zones between the Tropics and polar circles which have a moderate climate; and the Frigid Zones within the polar circles which provide less heat and are very cold. In conclusion, these lines of latitude are imaginary but help locate places and determine climate and time.

1. WELCOME

2. KTCT
COLLEGE OF
TEACHER
EDUCATION

4. PRESENTED BY
SONIA RAMAKRISHNAN
SOCIAL SCIENCE
REG.NO : 13369024

5. OUR EARTH

7. LATITUDES

8. IMPORTANT PARALLELS OF
LATTITUDES
 THE EQUATOR 0’
 TROPIC OF CANCER 23 1/2’ N
 TROPIC OF CAPRICORN 231/2’ S
 ARCTIC CIRCLE 66 ½ ‘N
 ANTARCTIC CIRCLE 66 ½’ S
 NORTH POLE 90’N
 SOUTH POLE 90’S

9. Equator is the longest latitude which
divides the earth into two equal parts.
1. Northern Hemisphere
2. Southern Hemisphere
All Parallel circles from the equator up
to the poles are called Parallels of
latitudes.

10. HEAT ZONES OF THE EARTH

11. HEAT ZONES OF THE EARTH
•TORRID ZONE
•TEMPERATE ZONE
•FRIGID ZONE

12. TORRID ZONE

13. TORRID ZONE
[O-23 ½’ N Equator – Tropic of cancer
0-23 ½’ S Equator - Tropic of Capricorn]
•Sun is exactly over head at least once in a year
•Receives maximum heat

14. TEMPERATE ZONE

15. TEMPERATE ZONE
[23 ½’ N- 66 ½’N Tropic cancer Arctic circle
23 ½’S- 66 1/2’S Tropic of Capricorn to Antarctic circle]
1. Sun’s rays goes on decreasing
2. Moderate climate

16. FRIGID ZONE

17. FRIGID ZONE
{66 1/2’ N- 90’ N Arctic circle – North pole
66 ½’ S- 90’S Antarctic circle –South pole}
1. Sun rays are always slanting
2. Provides less heat
3. Very cold

19. CONCLUSION
•There are no such lines on the earth.
•There are the imaginary lines made by man.
•They help us to locate places.
•Climate,Time,etc are determined by the help
of these lines.

20. THANK YOU