(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Geography

Give a reason for the following :

Local time is a theoretical reality, while Standard Time is a practical necessity.

Give a reason for the following :

“The International Date Line is not a straight line coinciding with longitude 180 degrees.” Why?

Give a reason for the following :

The distance between two consecutive meridians is equal to about 111 kilometers only at the equator.

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 :

All parallel other than equator are not Great Circles.

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?

State two properties of lines of longitude.

Clearly distinguish Longitude from Lines of Longitude.

What do you mean by “Meridians or Lines 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.

What will be local time at Delhi 77° E longitude when it is 3 p.m. at Tokyo 139°E longitude?

What will be the local time at Madras 80°E? When it is 9 P.M. in New York at 74° W?

“The degree of longitude decreases in length poleward”. Why?

What is the relation between longitude and time?
Or
“There is a difference of 4 minutes of time for one degree of longitude”. Why?

A ship crossing international dateline at mid-night on Wednesday Eastwards, find that it is mid-night Tuesday on the American side. Why?

What do you mean by local time?

What is the local time when it is noon at a place?

What are the main characteristics of local time?

(a) What is the rule of changing the date while crossing the international date line?
(b) What is meant by ‘six-day week’ and ‘eight-day week’?