Advertisements
Advertisements
Question
Give a reason for the following :
“The International Date Line is not a straight line coinciding with longitude 180 degrees.” Why?
Solution
The International Date Line passes through the Pacific ocean where there are no landmasses. It follows 180° meridian for most of its distance. The dateline is zig-zag in some places to avoid the confusion of time on the same island. It avoids some islands and deviates from 180°. In Northern Hemisphere, it bends to the West of 180° while in the Southern Hemisphere it bends Eastwards.
APPEARS IN
RELATED QUESTIONS
Which line of longitude is used to fix the World Standard Time? State its value in degrees.
Give a reason for the following:
IDL deviates and goes zig-zag near some Islands in the Pacific ocean.
Why are there 180 parallels of latitude?
Give a reason for the following :
When it is noon at Cairo (30°E), the local time in New York (75°W) is 5.00 a.m.
Give a reason for the following :
A person, travelling from Mumbai to London, alters the time on his watch at several places.
Explain why the lines of longitude are called meridians of longitude?
What adjustment has to be made when ships cross the International Date Line?
OR
Explain why a day appears to be lost in sailing round the world from east to west and gained when travelling from west to east.
Fill in the blanks.
The Standard Meridian of India is ____________________.
A cricket match begins at 10.30 am on January 10 in New Zealand (time zone of +12). Tell the time in Greenwich when it is shown live on TV there.
Two opposite meridians form a ______.
