CLASS - 6 // SUBJECT - GEPGRAPHY // LESSON – 2 // GLOBE : LATITUDES AND LONGITUDES //

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LESSON – 2

GLOBE : LATITUDES AND LONGITUDES

Answer the following questions briefly:

1.   What is the true shape of the earth?

The true shape of the Earth is geoid-earth like shape. In other words, it is orange shaped.

2.   What is the globe?

Globe is the three dimensional model of the earth.

3.   What is the latitudinal value of the Tropic of Cancer?

2312° N.

4.   What are the three heat zones of the Earth?

(i) Torrid Zone
(ii) Temperate Zone
(iii) Frigid Zone.

5.   What are parallels of latitude and meridians of longitude?

Parallels of Latitudes and Meridians of Longitudes:
Parallels of Latitudes:
All the parallel circles from the equator to the poles are called parallels of latitudes.
Meridians of Longitudes:
All the semi-circles which join north pole to south pole are termed as meridians of longitudes.

6.   Why does the Torrid Zone receive the maximum amount of heat?

 

Torrid Zone receives the maximum amount of heat because of the following reasons:

·       The Sun shines perpendicular between Tropic of Cancer and Tropic of Capricorn throughout the year.

·       Perpendicular sun rays give more heat than slanting sun rays.

 

7.   Why is it 5.30 p.m in India when it is 12.00 noon in London?
 It is 5.30 p.m. in India when it is 12.00 noon in London because of the following reasons:

·       London is located at 0° longitude while the time of 8212° E longitude is taken as standard time in India.

·       There is a difference of 8212 between the longitude of London and the Standard Meridian of India (8212 E).

·       Time in India is ahead of London. It is 4 minutes ahead at every longitude towards east.

·       Hence time in India is ahead of London by 5.30 hours (4 x 8212 = 330 minutes or 5.30 hours).

 

8.   What are the two types of lines needed to locate any point on the earth’s surface? [V. Imp.]
Answer: Latitudes and longitudes are required to locate any point on the earth’s surface.

 

9.   Define latitude.
Answer: One of the imaginary circles parallel to the Equator is called latitude.

 

 

10. Define longitude.
Answer: One of the imaginary circles parallel to the Prime Meridian is called longitude.

 

11. Which place is used as a standard for a time all over the world?
Answer: Greenwich in Britain is used as a standard for a time all over the world.

 

 

12. Geographically, what is the time difference between Dwarka in Gujarat and Dibrugarh in Assam? [Imp]
Answer: The time difference between Dwarka and Dibrugarh is of 1 hour 45 minutes.

 

13. A particular city lies in the time zone-2. What does this mean?
Answer: This means that the city’s local time is 2 hours behind Greenwich.

 

14. What does the time ‘12 noon’ signify at any place?
Answer: ‘12 noon’ refers to the time when the sun is at the highest point in the sky.

 

15. Which heat zone does the equator lie in?
Answer: The equator lies in the Torrid Zone.

Short Answer Type Questions

1.   A cricket match begins at 10.30 am on January 10 in New Zealand (time zone of +12). TU. the time in Greenwich when it is shown live on TV there.
Answer: New Zealand lies in time zone +12, Le. it is 12 hours ahead of Greenwich, or Greenwich is 12 hours behind New Zealand. So when it is 10.30 am on January 10 in New Zealand, it is 10.30 pm on January 9. So the cricket match will be telecast from 10.30 pm on Jan 9 in Greenwich.

2.   Why do we have the concept of time zone? [V. Imp.]
Answer: The sun does not shine with the same intensity over all parts of the world at a particular time. If it is overhead at one place (midday), then it does not shine at all (midnight) at the place directly opposite to that place on the earth. So if we have the same time, then 12 noon will mean midday at one place, and midnight at another. To avoid such an awkward system, we have the system of time zones, so that everywhere a particular time means the same stage of the day.

3.   Write a short note on Heat Zones. [Imp.]
Answer: Heat zones are the different zones of the earth, where the sun’s rays fall differently, thus causing different climate patterns. These zones are called the Torrid Zone, the two Temperate Zones, and the two Frigid Zones. The Torrid Zone is very hot since the sun shines overhead here. The Temperate Zones maintain a moderate climate, and the Frigid Zones are extremely cold.

 

4.   How do latitudes and longitudes help in locating a point? Why is only one of them insufficient in doing this?[V. Imp.]
Answer: Latitudes and longitudes form a grid. Two different points may lie on the same latitude or the same longitude. But there exists only one point where latitude and longitude intersect. So a point can be identified with the help of the latitude and longitude on which it lies.

 

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