Class – III Subject – S.St ( Weekly Test )

A – Tick the correct answer :-                      [ 4 ×½= 2 ]

1. In the solar system , the sun is ________

a. at the centre                                                b . in the corner                               c . over the wall

2. Comets are huge lumps of ____________

a. paper pieces                                           b. snowy and rocky dust                        c. saw dust

3. Planets do not have ____________ of their own.

a. light                                         b. heat                              c. light and heat

4. Several million galaxies make up the _______________

a. Earth                                b. Mars                                  c. Universe

B – Write true or false :-                                [ 4 ×½= 2 ]

1. The moon has light and heat of its own.

2. Saturn has 32 known satellites.

3. A shooting star is a meteor.

4. Asteroid is not a heavenly body.

C – Write meaning of the following words :-          [ 2×1= 2 ]

1. infinite –

2. cavity –

D – Answer the following questions :-              [ 2 ×2 = 4 ]

Q1. What is an orbit?

Q2. What are satellites?