Checkpoint

1. Ferdinand

2.7

3. Earth

Exercise

A. Fill in the blanks.

1. Earth

2. round, flat

3. Atmosphere

4. 7, 5

5. Lunar Eclipse

 

B. State whether these statements are true (T) or false (F).

1. F

2. F

3. T

4. F

 

Q. 1 Does the surface of the earth have more land of water ?

Ans. – The surface of the earth have three – forth (3/4 th) part of water and only one – forth (1/4 th) part is land.

 

Q.2  Define the shapes of the Earth.

Ans. – The shape of the earth is spherical.

 

Q.3 Hoe do we know that the Earth is round  ?

Ans. – In the year 1522, Ferdinand Magellan and his crew stated voyage from Spain. They kept sailing in the same direction. After about three years, they reached the same place from where they had started. This proved that the Earth was round.

 

Q. 4 What is horizon ?

Ans. - The point at which the Earth and sky appears to meet is called horizon.

 

Q.5 What is the layer of air around the Earth called ?

Ans. – The layer of air around the earth called Atmosphere.

 

Q.6 Name the continents and oceans of the Earth.

Ans. – Following are the name of continents of the earth :-

  1. Asia
  2. Africa
  3. North America
  4. South America
  5. Europe
  6. Autralia
  7. Antarctica.

Following are the names of Oceans of the Earth :-

  1. Indian
  2. Pacific
  3. Atlantic
  4. Southern
  5. Arctic

 

Q.7 What is the difference between solar eclipse and lunar eclipse ?

Ans . –

Solar Eclipse -

1) It occurs when the Moon Blocks the Sunlight falling on the Earth by coming in between the Sun and the Earth.

2) It may last only for a few minutes.

3) We must not see the sun with naked eyes as it may harm our eyes.

Lunar Eclipse

1) It occurs when the earth block the sunlight falling on the Moon by coming in between the Sun and the Moon.

2) It can last for a few hours.

3) We can look at the Moon during a Lunar Eclipse

 

Q.8 Why is the earth called Blue Planet ?

Ans. – The surface of the Earth is made up of land and water. It has three parts of water and only one part land. That is why, it looks blue. The Earth is also called Blue Planet.

 

Q.9 Draw the well –labeled diagrams of :-

1) Solar Eclipse.

2) Lunar Eclipse.