Answer the following questions briefly : 1. Why do we need to locate places on Earth?
2. What do you mean by the latitude of a place?
3. What is meant by Prime Meridian?
4. Explain why there is no higher latitude other than 90 degrees North and South
5. Explain why Lines of Longitudes are called Meridian of Longitude.
6. State two properties of the Lines of Latitude.
7. State two properties of Lines of Longitude.
8. The distance between two successive parallels of latitudes is 111 km. Explain.
9. What are the limits of two Temperate Zones?
10. Why are the places in the Torrid Zone hotter than those in other zones?
11. Why are the places in the Frigid Zone colder than in other zones?
12. How is the Local Time of a place fixed?
13. Is it correct to say that Local Time is the Sun Time?
14. If the GMT at 0° longitude is 12 noon, find the local time of place A (30°E).
15. Why is the Standard Time considered necessary?
16. What are Time Zones? How many Time Zones do we have?
17. London experiences a lower temperature than Singapore throughout the year. Why?
18. What is International Date Line? Describe the use of this line.
19. Why do some countries have many Time Zones?
20. What are Small Circles?
21. Except for the Equator, other Parallels of Latitudes are not Great Circles. Why?
22. How is the use of local time inconvenient in practical life?
23. What is a Grid?
24. Who was the first mathematician to have measured the circumference of the Earth?
25. Name the important Climatic Zones of the World.
26. State the rate of change of time with longitude.
27. Explain how latitudes and longitudes help to locate position of a place on a globe.
Answers
Answer: 1. Location is very important this is because it enables us to know the precise place of human settlement, town, village or city.
2. The latitude of a place is the angular distance of the point north or south of the equator, measured in degrees. The equator is taken as 0° latitude. Latitudes are measured from 0° to 90° N and 0° to 90° S.
Answer:
1. Location is very important this is because it enables us to know the precise place of an archaeological site, human settlement, town, village or city. An absolute location is a depiction of the exact site on an objective coordinate system i.e grid which mostly is the longitude and latitude on the map.
2. Latitude is the measurement of distance north or south of the Equator. It is measured with 180 imaginary lines that form circles around the Earth east-west, parallel to the Equator. These lines are known as parallels. A circle of latitude is an imaginary ring linking all points sharing a parallel.
3. The prime meridian is the line of 0° longitude, the starting point for measuring distance both east and west around the Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere.
4. Latitude is the angular distance from the plane of the Equator. Latitude only has to cover 180 degrees, from the North Pole to the South Pole. All circles make a maximum angle of 900 from the plane of the Equator. Therefore the maximum, latitude is 900 N in the Northern hemisphere and 900 S in the Southern Hemisphere.