KERALA PSC / PHYSICAL GEOGRAPHY / POSITION, SHAPE AND SIZE OF EARTH / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE

 

KERALA PSC / PHYSICAL GEOGRAPHY / POSITION, SHAPE AND SIZE OF EARTH / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE

KERALA PSC / PHYSICAL GEOGRAPHY / POSITION, SHAPE AND SIZE OF EARTH / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE

·      Earth moves around the sun in an elliptical orbit. The spinning (rotation) of the earth at a high speed has caused its mass to bulge at the equator and sink in at the poles.

·      The bulging of central part (equatorial region) is due to centrifugal force.

·      The plane passing through the Earth’s orbit is called orbital plane. The Earth’s axis is inclined and makes an angle 66½° with the orbital plane.

·      The difference between the equatorial diameter (12,755km) and the polar diameter (12,712 km) of earth is 43km.

·      71% of the total surface area of earth is water and 29% is land

·      Earth has 40,005 km polar circumference and 40,077 km equatorial circumference.

KERALA PSC / PHYSICAL GEOGRAPHY / POSITION, SHAPE AND SIZE OF EARTH / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE