Morning Star solutions for Total Geography [English] Class 9 ICSE chapter 2 - Geographic Grid: Latitudes and Longitudes [Latest edition]

What is a geographic grid? 

Who devised the lines of latitude and longitude?

What are the lines of latitude and longitude?

Mention two characteristics of lines of latitude. 

Name the two hemispheres of the earth made by the Equator.

Express 1° angular distance in kilometers.

Name the thermal zones of the earth.

With the help of degrees, name the important lines of latitude.

Which temperature zone receives almost vertical rays of the sun and which zones receive slanting rays?

Which line is known as the Prime Meridian? State its importance.

How can the general climate of an area be described with the help of the lines of latitudes?

Which line of longitude is used to fix the World Standard Time? State its value in degrees. 

State the longitudinal value in degrees of Indian Standard Meridian.

What is meant by IDL? State its importance.

What are the Great Circle Routes? State their importance.

What is the globe? State the importance of a globe.

Give a geographical reason for the following:

Lines of latitude carve out the heat zones of the earth. 

Give a reason for the following:

Lines of longitude are also called Meridians of longitude?

Give a reason for the following:

Diametrically opposite lines of longitude and the Equator are called Great Circles.

Give a reason for the following:

The Greenwich time is called Greenwich Mean Time.

Give a reason for the following:

IDL deviates and goes zig-zag near some Islands in the Pacific ocean.

Give a reason for the following:

A globe is the most popular model of the earth.

Describe the lines of latitude, their importance, and use.

With reference to the International Date Line, state the following:

It is meaning and application.

With reference to the International Date Line, state the following:

The important deviations it makes and reasons for the same.

With reference to the International Date Line, state the following:

Give an example of how time lost or gained is computed with reference to this line.

Describe the lines of longitude and state their use in relation to distance and time.

Make a detailed study of finding time with the help of longitudes. Give one practical example.

A cricket match was to be held at Birmingham at 9 a.m. local time. The position of Birmingham is 5° W. Calculate the time the viewers have to tune their television in Sydney 151°E.

An important programme was to be broadcast from Mumbai at 7.30 p.m. This was heard by some Indian sailors near Ivory Coast in West Africa at 20°W longitude. What was the local time there?

What is the longitude of a place where the local time 1:15 p.m. when it is 4 a.m. at Chicago (88°W)?

Calculate the time at Durban (longitude 30°E) when the time is 7.00 a.m. at New York (75°W).

Calculate the longitude of a place where the local time is 6.00 a.m. when the time is 9.00 p.m. at New Delhi on longitude 77° E. 

Calculate the local time in Singapore (104°E) when it is 6.00 p.m. at Greenwich.

Calculate the location of a place where the local time is noon when it is 7.30 p.m. at Greenwich.

What is the time and day at Mumbai (73°E) when it is Sunday at 10.30 p.m. at Shillong (92°E)?

How many lines of latitude are there?

How many lines of longitude are there?

Which meridian is called Prime meridian?

What is the latitude of the equator?

What is the latitude of Tropic of Cancer?

What is the latitude of Tropic of Capricorn?

Which is the longest line of latitude?

Which star is located vertically above the North pole?

Into how many time zones, has the world been divided?

What do you mean by meridians?

What is the relation between Temperature and Latitude of a place?

What is latitude of North pole and South pole?

Why are there 180 parallels of latitude?

Name the two hemispheres of the Earth made by the equator?

Which temperature zone receives slanting rays?

Name the two reference lines with respect to which the distances of various places on the earth’s surface are measured?

What is the rate of change of time per degree of longitude?

Why are the letters N or S added to latitude values?

Why are letters E or W added to longitude values?

What is the importance of Tropic of Capricorn?

What is meant by “the Parallels of Latitude?

How is the longitude of a place determined?

What do you mean by the Longitude of a place?

What is the “Prime Meridian”?

What is the difference between Prime Meridian and other meridians of longitude?

Explain how latitudes and longitudes help to determine the position of a place on the globe?

Explain how the longitude of a place affects the time.

What is “Greenwich Mean Time”?

How far is it correct to say that local time is the Sun time?

How can you say that the use of ‘Local Time’ is very inconvenient nowadays in practical life?

Why do some countries have many time zones?
OR
What are ‘Time Zones’?

Give a reason for the following :

There are no latitudes higher than 90°N and 90°S.

Give a reason for the following :

The opposite meridians of longitude form a Great Circle.

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.

What do you mean by the Latitude of place?

How are Latitudes measured?

Explain why the lines of longitude are called meridians of longitude?

State two properties of lines of latitude.

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 is the latitude of Equator? Also give its characteristics.

What is the latitude of North Pole? Also, give its characteristics.

What is the latitude of South Pole? Also, give its characteristics.

What is the latitude of the Tropic of Cancer? Also, give its characteristics.

What is the latitude of the Tropic of Capricorn? Also, give its characteristics.

What is the latitude of Arctic Circle? Also, give its characteristics.

What is the latitude of Arctic Circle? Also, give its characteristics.

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.

Define the Equator. What is its main function?

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?

“Lines of latitude are called parallels of latitude” Why?

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

Mid-days Sun can be seen overhead in Chennai twice a year, but not even once in Delhi. Why?

Explain why there is no higher latitude other than 90° N and 90° S.

Name the five important parallels of latitude.

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’?