A. Answer these questions briefly.
1. What is a grid? What is a geographic grid?
2. Define Equator. What is the importance of the Equator?
3. Define latitude with the help of a diagram.
4. Explain the Heat Zones of the Earth.
5. What is a longitude?
6. Explain how longitude and time is related.
7. How is local time determined?
8. Why is the standard time more scientific than local time?
9. Why are time zones a necessity for some countries?
10. Why is the Equator the only great circle?
11. With reference to International Date Line (IDL):
Which longitude is considered as the IDL?
b. Where does the IDL pass through?
Answers
Answered by
4
Answer:
Explanation:
1) Grid :
A grid is a network of intersecting parallel lines.
Geographic Grid :
A mesh of intersecting Latitudes and Longitudes drawn on a map produce a Geographic Grid.
2) Equator :
It is halfway between the North Pole and the South Pole, at 0 degrees latitude.
Importance of the Equator :
These lines are important, because they help people navigate and measure time.
3) Latitude:
Lines of latitude measure north-south position between the poles. The equator is defined as 0 degrees, the North Pole is 90 degrees north, and the South Pole is 90 degrees south.
4) Heat Zones of the Earth :
The different zones of the earth, where the sun's rays fall differently, hence causing different climate patterns.
5) Longitude :
Angular distance east or west on the earth's surface, measured by the angle contained between the meridian of a particular place.
6) Longitude and time is related :
The earth has 360 imaginary lines called longitudes or meridians running vertically between the poles. The time difference between each longitude (each degree) is 4 minutes. So if it is 12 noon at Greenwich (0 degree), it would be 12:04 pm at 1 degree meridian .
7) Local time determined :
LSTM = The local standard time meridian, measured in degrees, which runs through the center of each time zone.
8) Standard time more scientific than local time :
Standard time is more specific and convenient instead of local time as it manages uniformity of time and avoids unwanted chaos.
9) Time zones a necessity for some countries :
Earth receive sunlight or darkness, giving us day and night. As your location on Earth rotates into sunlight, you see the sun rise.Since different parts of Earth enter and exit daylight at different times, we need different time.
10) Equator the only great circle :
A great circle is the largest possible circle that can be drawn around a sphere.The Equator is another of the Earth's great circles. If you were to cut into the Earth right on its Equator, you'd have two equal halves, the Northern and Southern Hemispheres. The Equator is the only east-west line that is a great circle.
11) International Date Line (IDL) :
an imaginary line on Earth's surface defining the boundary between one day and the next.The International Date Line is located halfway around the world from the prime meridian (0° longitude) or about 180° east or west of Greenwich, London, UK, the reference point of time zones.
longitude is considered as the (IDL) :
The International Date Line.nternational Date Line follows the meridian of 180° longitude down the middle of the Pacific Ocean for some time.
b) IDL pass through :
The International Date Line, established in 1884, passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth.
Similar questions