Q.1. Answer the following questions briefly.
(a) What is the true shape of the Earth?
Ans. Earth is slightly flattened at the North and the South Poles and bulges in the middle.
(b) What is a globe?
Ans. Globe is a true model (miniature form) of the earth.
(c) What is the latitudinal value of the Tropic of Cancer?
Ans. The Tropic of Cancer lies at 23½º North of the Equator.
(d) What are the three heat zones of the Earth?
Ans. The three heat zones of the Earth are Torrid Zone, Temperate Zone and Frigid Zone.
(e) What are parallels of latitude and meridians of longitude?
Ans. All imaginary parallel circles from the equator to the poles are called parallels of latitude. The imaginary set of semi-circle lines that run from North Pole to South Pole are called meridians of longitude.
(f) Why does the Torrid zone receive maximum amount of heat?
Ans. Torrid zone lies between the Tropic of Cancer and Tropic of Capricorn. The mid-day sun is exactly overhead at least once a year on all latitudes in this area. Therefore, Torrid Zone receive maximum amount of heat.
(g) Why is it 5.30 p.m. in India and 12.00 noon in London?
Ans. London is situated at 0º longitude i.e., Greenwich mean time (GMT). India located east of Greenwich at 82° 30′ E is 5 hours and 30 minutes ahead of GMT. So, when it is 5.30 p.m. in India, it is 12.00 noon in London.
(h) What is the true shape of the earth?
Ans. The Earth is not an exact sphere. It is slightly flattened at the North and South pole and bulges in the middle.
(i) What separates North Latitudes from South Latitudes?
(j) A particular city lies in Zone-2. What does this mean?
Ans. This means the local time of that city is 2 hours behind the Greenwich time.
(k) What does 12 noon signify for a place?
Ans. 12 noon refers to the Sun at its highest position in the sky, at that place.
(l) In which Zone does the Equator lie?
Ans. Torrid Zone.
Q.2. Choose the correct answers.
(a) The value of the Prime Meridian is
Ans. (ii) 0°
(b) The Frigid Zone lies near
(i) The Poles
(ii) The Equator
(iii) The Tropic of Cancer
Ans. (i) The Poles
(c) The total number of longitudes are
Ans. (i) 360
(d) The Antarctic Circle is located in
(i) The Northern hemisphere
(ii) The Southern hemisphere
(iii) The Eastern hemisphere
Ans. (ii) The Southern hemisphere
(e) Grid is a network of
(i) Parallels of latitudes and meridians of longitude
(ii) The Tropic of Cancer and the Tropic of Capricorn
(iii) The North Pole and the South Pole
Ans. (i) Parallels of latitudes and meridians of longitude
(f) A hemisphere is one half of a sphere. State True or False.
(g) To know the exact position of a place we need to know its Latitude. State True or False.
(h) All places lying on the same longitude will have same time. State True or False.
(i) When it is 8:00 pm 2nd April in Greenwich what is the time in Delhi?
Ans. 1:30 am, 3rd April in Delhi.
(j) The Earth rotates from west to east. State true or false
(k) The two Temperate Zones maintain an extreme climate. State whether True or False.
(l) The Prime-Meridian is 180 degree longitude. State whether True or False.
(m) The difference between the local time of Greenwich and the place at 180 Degree longitude in hours.
Ans. 4 hours.
Q.3. Fill in the blanks.
(a) The Tropic of Capricorn is located at _____.
Ans. 23.5 Degrees south of the Equator.
(b) The Standard Meridian of India is _____.
Ans. 82½Degrees E.
(c) The 0° Meridian is also known as _____.
Ans. Prime Meridian.
(d) The distance between the longitudes decreases towards _____.
(e) The Arctic Circle is located in the _____ hemisphere.