Page 97 - Genius Kidz Prudence Learning Sc-8

Saturn, Uranus and Neptune. Orbits in
Solar system
The sun
2. Planets : Planets revolve around the Sun.
They are not fixed in their position. But they
revolve in specific orbits only. Out of eight
planets, four have rocky earth - like surface,
they are called terrestrial planets or earth -
like planets - Mercury, Venus, Earth & Mars.
Other four planets are large in size and are
basically composed of gases. Jupiter,
north pole
1A.V = 1.5 × 108 km.
1 light year = 9.46 × 10 km.
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which planets move are elliptical. All
planets move in counter clockwise
direction from west to east.
(a) Mercury (Budh) :
Smallest and closest planet to the
sun.
Mercury does not have any
atmosphere. So it does not support
life.
Mercury does not have any satellite.
Mercury does not have any plane or
seas on its surface.
Orbital period of mercury is 88 days.
Rotation period of mercury is 58.6
days.
Mercury
(b) Venus (Shukra) :
It is the brightest and the hottest
planet of the solar system.
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