Page No. 327
Checkpoint
Choose the correct options.
1. A ____ is a three-dimensional model of the Earth.
Ans: a) Asia
3. The ____ is also known as Austral Ocean.
Ans: c) Southern
4. Greenwich is a village in ____.
Ans: c) London
New Words
* bulging: sticking out of a surface
* three-dimensional: an object which has length, breadth, and height
* rainforest: forest that receives high amount of rainfall.
* grassland: vast land or region covered with grass
* wildlife: animal life of a region
* intersect: divide by passing across something
Recap
* A globe is a three-dimensional modal of the Earth.
* Continents are continuous expanses of land. Each continent is made up of different countries.
* The line that passes horizontally through the middle of the Earth is called the Equator.
* Longitudes are imaginary, vertical lines running from the North Pole to the South Pole.
Exercise
A. Fill in the blanks.
1. ____ is a two-dimensional representation of the Earth.
Ans: Map
2. ____ are parallel lines.
Ans: Latitudes
3. ____ is the smallest continent in the world.
Ans: Australia
4. Latitudes and longitudes intersect to make a web-like structure called ____.
Ans: grid
5. The ____ is considered as the 0 longitude.
Ans: Greenwich Meridian or Prime Meridian
(Please check the question in your book)
B. Match the columns.
Column A Column B
1. Tropic of Cancer a) 66
2. Tropic of Capricon b) 66
3. Arctic Circle c) 23
4. Antarctic Circle d) 23
Ans: 1. - d
2. - c
3. - b
4. - a
(Please check the question in your book)
C. State whether these statements are true (T) or false (F).
1. The shape of the Earth is a perfect sphere.
Ans: F
2. The Equator is the most important line of longitude marked as 180
Ans: F
3. The Pacific Ocean is the smallest ocean.
Ans: F
4. The Indian Ocean is the largest ocean in the world.
Ans: F
5. Longitudes run from north to south.
Ans: T
D. Answer these questions.
1. What is the shape of the Earth?
Ans: The shape of the Earth is oblate spheroid.
2. How many countries are there in Africa?
Ans: There are 54 countries in Africa.
3. How many oceans are there? Name them.
Ans: There are five oceans. Those are as follows - Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean and Arctic Ocean.
4. What divides the Earth into two hemispheres?
Ans: The Equator divides the Earth into two hemispheres.
5. List the important latitudes.
Ans: The important latitudes are Noth Pole, Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, Antarctic Circle and South Pole.
6. Distinguish between a globe and a map.
Ans: Difference Between Globes and Maps:-
a) A globe is spherical, representing the shape of the Earth. A map is drawn on a flat surface. It does not show the correct shape of the Earth.
b) A globe can be used to locate various continents and major seas and oceans of the world. A map shows places within the continents and countries.
c) A globe represents the entire Earth, in less details. A map can represent either the whole or part of the world, in more details.
7. How is the Equator different from the Prime Meridian?
Ans: The Equator passes horizontally through the middle of the Earth but The Prime Meridian is imaginary, vertical lines running from the North Pole to the South Pole.
8. Why are there no permanent residents on Antarctica?
Ans: There are no permanent residents on Antarctica because it is the coldest, windiest and driest of
all continent.
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