SUBJECT – SOCIAL STUDY

GENERAL INSTRUCTIONS

1. Dear children, stay safe at home and complete the assignments of Social Study to keep yourself updated with the subject.

2. Do all the assignments in presence of your parents.

3. Read the general explanation of chapter-3 “Our Neighbours” given in the assignments and do the worksheets.

4. Do all the written work in a practise notebook and later the same needs to be done in class notebook.

SUBJECT – S.St.CHAPTER 3 – THE

NEIGHBOURS OF OUR EARTHWEEK-1 ASSIGNMENTS

GENERAL EXPLANATION OF CHAPTER-3

“THE Neighbours OF OUR EARTH”

Introduction: - Our Earth is not alone in

the sky. The Sun and the Moon are our

neighbours. During the daytime, we see

the Sun in the sky and at night, we see

the Moon in the sky. The Sun rises in the

East and sets in the West.

We also see many twinkling stars in the

sky at night. These stars are very far

away from us. That is why they look like

tiny dots of light.

The Sun is also a star. It looks bigger as

it is nearer to the Earth than the stars.

The Sun : The Sun is the nearest star to

Earth. It is made up of hot and burning

gases. That is why it is called a ball of

fire. All the planets move around the

Sun.

The Sun is important for us because:-

It gives us heat and light. It is the main source of energy for

the Earth. This energy is called solar energy.

The plants use this energy to make food for themselves.

The family of the Sun is called the Solar System. The main members of the family are the Sun, the Planets and their satellites, meteors and comets. The Sun

is the largest member of the family. It is very big in size.

THE SOLAR SYSTEM

The Moon: The Moon is the satellite of

the Earth. It moves around the Earth in

the same way as the Earth moves

around the Sun.

The moon takes about one month to

complete one full round of the Earth.

The shape of the Moon is round like a

ball.

The Moon does not have its own heat

and light. It reflects the light which it

receives from the Sun. The Moon has no

atmosphere. Thus life is not possible on

the Moon.

FIGURE 1 THE MOON

The Planets: Planets are heavenly

bodies that revolve around the Sun.

They move around the Sun on a set path

known as Orbit. The planets do not

have their own heat and light. They get

heat and light from the Sun.

The Earth takes one year to complete

one full round of the Sun. The Earth is a

unique planet in the Solar System as it

has air and water which is necessary for

all living things to survive.

The Stars: A star is a huge ball of hot

burning gases. It gives out heat and

light. There are millions of stars in the

universe. The twinkling stars that we

see at night are actually very big in size.

They are very far away from us, that’s

why they look so tiny. There is a very

bright star in the sky. It is called the Pole

Star.

FIGURE 2 POLE STAR

Some stars in the sky appear to form

groups. These groups look like figures of

animals and other things. Such group is

called a Constellation. Some of the well

known constellations are – Leo, The

Great Bear, and Orion.

The white band of stars in the sky at

night is the Milky Way Galaxy. The Solar

System is the part of the Milky Way

Galaxy. It is also called Akash Ganga.

There are millions of galaxies in the

universe.

FIGURE 3 THE MILKY WAY GALAXY

Watch the video on the given link to be more clear about

the chapter.

youtu.be/vBJmR04zc7Q

(Use YouTube App for the videos.)

WORKSHEET-1

CHAPTER 3 – THE NEIGHBOURS OF OUR EARTH

Q1. Fill in the blanks with the correct word. (Planet, Sun, East, Moon, Constellation, West)

i. The ___ is the nearest star to our Earth.

ii. The ___ takes about one month to complete one-full round of the Earth.

iii. The Sun rises in the ___ and sets in the ___.

iv. A heavenly body which moves around the Sun is called ___.

v. A group of stars which appears to form a pattern in the sky is called a ___.

Q2. True/False.

i. Planets have their own heat and light. [ ]

ii. The Moon is the closest neighbour of the Earth. [ ]

iii. The Moon has atmosphere. [ ]iv. The Earth takes one year to

complete one-full round of the Sun. [ ]

Q3. Answer the following in one word.

i. The Ringed planet. ___ii. A very Bright star in the sky. ___iii. The planet nearest to the Sun. ___iv. The Natural satellite of the Earth.

___v. The Unique planet. ___

Q4. Match the following.

A B

i. Ball of fire Sapta Rishi

ii. Milky Way Galaxy Sun

iii. Great Bear Akash Ganga