Chapter -2

(The Earth, our home)

Back exercise question

Question 1: Why does life exist on Earth?

Answer 1: life exist on Earth because it has air and the right temperature needed by all living beings to live.

Question 2: What is a map? How is it more useful than a globe?

Answer 2: A map is a drawing of the Earth or a part of it. A map can be big or small.

A map is more useful than a globe because

1. Big globes are difficult to carry.

2. It is not possible to see all the places on a small globe.

Question 3: What are continents? Write the names of the seven continents.

Answer 3: Continents are large areas of land.

The seven continents are

1. Asia

2. Africa

3. North America

4. South America

5. Antarctica

6. Europe

7. Australia

Question 4: What is the difference between horizon and coast?

Answer 4: The place where the sky and the land or the sea appear to meet is called the horizon.

The place where the land and the sea meet is called the coast.

Think and answer

Question : Imagine you are lost at sea. You have to sail westwards. You have a compass. Will you be able to sail in the right direction? How?

Answer : Yes, I will be able to sail in the right direction. I have a compass and the compass needle always points the North. Once I know where North is, I can know the rest of the directions and sail in the right direction.

Extra questions

Question: Why Earth is also known as Blue planet?

Answer: Three of the four parts of the Earth’s surface are covered with water and only one part is covered with land. As a result, the Earth looks blue from space. Hence, it is also known as the Blue planet.

Question: What is the shape of the Earth.

Answer: The shape of our planet is like an orange. It is slightly flattened at the top and bottom, with a bulge in the middle. The Northern most point of Earth is called North Pole, and the southern most point is called the South Pole.

Question: Name the five oceans.

Answer: There are five oceans. These are the

1. Pacific Ocean

2. Atlantic Ocean

3. Indian ocean

4. Southern Ocean

5. Artic Ocean

Question: what is a globe?

Answer: A globe is a very small model of the Earth. It shows the exact shape of the Earth and has the continents, oceans and countries marked on it.

Question: what is a map?

Answer: A map is a flat drawing of the surface of the Earth.

Question: Take a physical map of the world and mark seven continents and five oceans on it.