# Balbharati solutions for Social Science Geography 9th Standard Maharashtra State Board chapter 7 - International Date Line [Latest edition]

## Chapter 7: International Date Line

Exercise
Exercise [Page 62]

### Balbharati solutions for Social Science Geography 9th Standard Maharashtra State Board Chapter 7 International Date Line Exercise [Page 62]

Exercise | Q 1 | Page 62

Two boxes in different hemispheres are given in the following diagram. The IDL passes through both the boxes. In one box,the meridian, day and date is given. Find the day and date for the other box.

Exercise | Q 2.1 | Page 62

Select the correct option :

While crossing the IDL, a person will have to add one day when travelling from

• East to West

• West to East

• South to North

• North to South

Exercise | Q 2.2 | Page 62

Select the correct option.

If it is Wednesday 10 a.m. at 150 E meridian, then what will be the time at IDL?

• Wednesday 6 a.m.

• Wednesday 9 p.m.

• Thursday 2 p.m.

• Thursday 6 p.m.

Exercise | Q 2.3 | Page 62

Select the correct option :

According to the international convention, at which meridian does the day and date change occurs?

• 90°E

• 90°W

• 180°

Exercise | Q 2.4 | Page 62

Select the correct option :

At which direction of the IDL does a new day start immediately?

• East

• West

• North

• South

Exercise | Q 2.5 | Page 62

Select the correct option :

IDL brings coordination in which of the following?

• GPS system

• Defence departments

• Transportation schedules

• Determining the hemisphere

Exercise | Q 3.1 | Page 62

Give geographical reason.

IDL is proving to be very useful in today’s times

Exercise | Q 3.2 | Page 62

Give geographical reason.

The day starts in Pacific Ocean on the earth

Exercise | Q 4.1 | Page 62

Write in brief:
What considerations have been made while deciding the IDL?

Exercise | Q 4.2 | Page 62

Write in brief:

While crossing the IDL, what changes will you make?

Exercise | Q 4.3 | Page 62

Write in brief:

Why is the IDL not a straight line like the 1800 meridian?

Exercise | Q 4.4 | Page 62

Write in brief.

Why doesn’t the IDL pass through land?

Exercise | Q 4.5 | Page 62

Write in brief:

Why is the IDL considered with respect to the 1800 meridian only?

Exercise | Q 5 | Page 62

Using an atlas, tell in which of the following routes the IDL will be crossed and show them on the map.
(1) Mumbai- London- New York- Los Angeles- Tokyo
(2) Delhi- Kolkata- Singapore- Melbourne
(3) Kolkata- Hong Kong- Tokyo- San Francisco
(4) Chennai-Singapore- Tokyo- Sydney- Santiago
(5) Delhi-London-New York

Exercise

## Balbharati solutions for Social Science Geography 9th Standard Maharashtra State Board chapter 7 - International Date Line

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