PPT: Planet: Earth in the solar system | Social Studies & Pedagogy Paper 2 for CTET & TET Exams - CTET & State TET PDF Download

 Page 1


Planet Earth in 
the Solar System
Page 2


Planet Earth in 
the Solar System
Celestial Bodies
1
Stars
Celestial bodies emitting their own heat 
and light abundantly.
2
Constellations
Star groups forming distinct patterns, 
such as Big Bear.
3
Galaxies
Vast systems with billions of stars, dust, 
and gases.
4
Universe
Made up of millions of galaxies, 
including Akash Ganga.
Page 3


Planet Earth in 
the Solar System
Celestial Bodies
1
Stars
Celestial bodies emitting their own heat 
and light abundantly.
2
Constellations
Star groups forming distinct patterns, 
such as Big Bear.
3
Galaxies
Vast systems with billions of stars, dust, 
and gases.
4
Universe
Made up of millions of galaxies, 
including Akash Ganga.
The Solar System
Milky Way
Our solar system is part of 
this galaxy. It contains 
about 20 billion stars.
Core
Extends from Sun to 
farthest planet. Spans 40 
astronomical units (6 
billion km).
Periphery
Includes comets, meteors, 
gases, and dust beyond 
the core.
The Sun, 300,000 times larger than Earth, emits light and heat via nuclear fusion, 
with a 6000°C surface and 15-20 million °C core.
Page 4


Planet Earth in 
the Solar System
Celestial Bodies
1
Stars
Celestial bodies emitting their own heat 
and light abundantly.
2
Constellations
Star groups forming distinct patterns, 
such as Big Bear.
3
Galaxies
Vast systems with billions of stars, dust, 
and gases.
4
Universe
Made up of millions of galaxies, 
including Akash Ganga.
The Solar System
Milky Way
Our solar system is part of 
this galaxy. It contains 
about 20 billion stars.
Core
Extends from Sun to 
farthest planet. Spans 40 
astronomical units (6 
billion km).
Periphery
Includes comets, meteors, 
gases, and dust beyond 
the core.
The Sun, 300,000 times larger than Earth, emits light and heat via nuclear fusion, 
with a 6000°C surface and 15-20 million °C core.
Inner Planets
Mercury
Smallest planet, closest to Sun. Rotates in 
58.65 days, orbits in 88 days. No 
atmosphere or satellites.
Venus
Brightest planet, Earth's closest neighbor. 
Similar mass and size to Earth. Very slow 
rotation (243 days).
Earth
Third planet from Sun. Only planet with 
water and life. One satellite: the Moon.
Mars
The "red planet." Thin CO¢ atmosphere. 
Two satellites: Deimos and Phobos.
Page 5


Planet Earth in 
the Solar System
Celestial Bodies
1
Stars
Celestial bodies emitting their own heat 
and light abundantly.
2
Constellations
Star groups forming distinct patterns, 
such as Big Bear.
3
Galaxies
Vast systems with billions of stars, dust, 
and gases.
4
Universe
Made up of millions of galaxies, 
including Akash Ganga.
The Solar System
Milky Way
Our solar system is part of 
this galaxy. It contains 
about 20 billion stars.
Core
Extends from Sun to 
farthest planet. Spans 40 
astronomical units (6 
billion km).
Periphery
Includes comets, meteors, 
gases, and dust beyond 
the core.
The Sun, 300,000 times larger than Earth, emits light and heat via nuclear fusion, 
with a 6000°C surface and 15-20 million °C core.
Inner Planets
Mercury
Smallest planet, closest to Sun. Rotates in 
58.65 days, orbits in 88 days. No 
atmosphere or satellites.
Venus
Brightest planet, Earth's closest neighbor. 
Similar mass and size to Earth. Very slow 
rotation (243 days).
Earth
Third planet from Sun. Only planet with 
water and life. One satellite: the Moon.
Mars
The "red planet." Thin CO¢ atmosphere. 
Two satellites: Deimos and Phobos.
Outer Planets
Jupiter
Largest planet, 1300 times Earth's volume. 
Gas giant with 61 satellites. Ganymede is 
larger than Mercury.
Saturn
Second largest planet, least dense. 
Beautiful ring system. Has 31 satellites 
including Titan.
Uranus
Seventh planet, not visible to naked eye. 
Rotates east to west. Has 26 satellites and 
faint rings.
Neptune
Eighth planet, slightly smaller than Uranus. 
Has 13 satellites. Atmosphere of hydrogen 
and helium.