The day on which the whole disk of moon is visible is ‘Full Moon Day’.

Every night, the size of the bright

part of the moon appears

to become thinner.

On the 15th day, the moon isn’t visible. This day

is known as ‘New Moon

Day’.

When only a small part of

moon is visible, it’s known as the Crescent moon.

The time period between one

full moon to the next full moon is

slightly longer than 29 days.

The various shapes of the bright part of the moon are called phases of the moon

The moon doesn’t produce its own

light , like the sun .

We see the moon because the

sunlight falling on it gets reflected .

We see only that part of the

moon , from which the light of

the sun is reflected .

The moon completes one rotation on its

axis as it completes a

revolution around he earth .

THE MOON’S SURFACE IS ROCKY OR BARREN.

THERE ARE MANY

CRATERS OF DIFFERENT

SIZES.

THE MOON ALSO HAS A

LARGE NUMBER OF STEEP HILL

AND MOUNTAINS. SOME ARE AS HIGH AS THE MT. EVEREST.

The sun and the celestial bodies that revolve around it form the solar system.

It consists of planets, comets, asteroids and meteors.

Now it’s called a dwarf star.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The gravitational pull of the sun keeps these objects

revolving.

Till 2006, Pluto was a planet of

the solar system.

There are eight planets in the solar system.

The sun is the nearest star from us.

It is continuously emitting huge amounts of heat

and light.

The Sun is the main source of heat & light for all the

planets.

Planets look like stars, but they don’t have

their own light.

A planet has a definite path in which it revolves around the sun called orbit. They also revolve on their own

axis.

Bodies revolving around planets are called natural

satellites. Man-made satellites are called artificial

satellites.

Any celestial body revolving around

another celestial body is called its satellite.

The Planets

Nearest planet to the sun

Smallest planet in the Solar System

No satellite of its own

Earth’s nearest planetary neighbour

Brightest planet in the night sky

Called a morning or an evening star

Rotates from East to West, unlike Earth

Only planet in which life is known to exist

Existence & continuation of life is due to special

environmental conditions

It has right temperature range, presence of water, suitable atmosphere and

ozone blanket

The earth has only one moon

First planet outside the Earth’s orbit

Because of its colour, it is also called Red Planet

Has two small natural satellites

Largest planet of the solar system

Its mass is 318 times of our Earth

It rotates very

rapidly on its axis

It has 67 confirmed

moons It has faint rings around it

Its rings make it unique & beautiful

It has 63 moons

Its density is lesser than water

They are the outermost planets of the solar system

Uranus rotates from East to West

So, in its orbital motion it appears to roll on its side