Term-II Subject: E.V.S. CH:14 Movements of the Earth Text Book work

Textbook Exercise 

1. Choose the correct option. 

a. The revolution of the earth causes .

Ans. iii. seasons  

b. How many days are there in a leap year? 

Ans.  ii. 366  

c. The time that the earth takes to move around the sun is known as a 

Ans. iii. solar year.

2. Fill in the blanks.

 a. The earth rotates from west to east.  

 b. A leap year comes after every fourth years. 

c. The earth spins on its  axis

Ans. a.- iv, b-iii, c-i, d-ii

4. Answer the following questions.  (Write these answers in the notebook)

a. What is rotation?

Ans. The earth spins on its own axis and this movement is called rotation.

 b. Explain how a leap year has 366 days.

Ans. Every fourth year we have an extra day which is added in the month of February. As a result, every fourth year, February has 29 days. Such a year with 366 days is known as a leap year.

 c. What causes day and night?

Ans. The rotation causes the sun to appear to rise in the east and set in the west. For the parts of the earth that faces the sun, it is daytime and for the parts that do not face the sun, it is night time.