Q: Answer the following questions briefly:
a) What is the true shape of the earth ?
Ans: Earth is slightly flattened at the poles and bulge in the middle.
b) What is a globe ?
Ans: Globe is a true miniature model of the Earth.
c) What is the latitudinal value of the Tropic of Cancer ?
Ans: 23.5 degree N is the latitudinal value of the Tropic of Cancer.
d) What are the three heat zones of the Earth ?
Ans: The three heat zones of the Earth are: Torrid, Temperate and Frigid.
e) What are the parallels of latitude and meridians of longitude ?
Ans: All parallel circles from the equator up to the poles are called ‘Parallels of Latitude’. The lines running from North Pole to South Pole are known as ‘Meridians of Longitude’.
f) Why does the torrid zone receive maximum amount of heat ?
Ans: The mid-day sun is exactly overhead at least once a year on all latitudes in between the Tropic of Cancer and Tropic of Capricorn. This area, therefore, receives the maximum heat.
g) Why is it 5:30 p.m. in India and 12 noon in London ?
Ans: India is located east of Greenwich is 5 hours and 30 minute ahead of GMT. So it will be 5:30 p.m. in India when its 12 noon in London.