solar system

2. PRESENTED BY :
NIDA FATHIMA
CLASS : VIII

3. WHAT IS SOLAR SYSTEM ?.....WHAT IS SOLAR SYSTEM ?.....
It is the collection of eight planetsIt is the collection of eight planets
and their moons in orbit round theand their moons in orbit round the
sun, together with smaller bodiessun, together with smaller bodies
in the form of asteroids,in the form of asteroids,
meteoroids, and comets.meteoroids, and comets.

4. This is our solar system

5. The SunThe Sun
 The sun is theThe sun is the
biggest, brightest, andbiggest, brightest, and
hottest object in thehottest object in the
solar system.solar system.
 The sun is anThe sun is an
ordinary star.ordinary star.
 The sun is made ofThe sun is made of
about 70% hydrogenabout 70% hydrogen
and 28% helium.and 28% helium.

6. WHAT ARE PLANETS ?.....WHAT ARE PLANETS ?.....
It is a celestial body which isIt is a celestial body which is
moving in anmoving in an
elliptical orbit round a star.elliptical orbit round a star.

7. How many planets are there ?How many planets are there ?
There are 8 planets. They are :There are 8 planets. They are :
 MercuryMercury
 VenusVenus
 EarthEarth
 MarsMars
 JupiterJupiter
 SaturnSaturn
 UranusUranus
 NeptuneNeptune
Guess
out !!!!!!!
!!!!

8. MercuryMercury
 Mercury is solid andMercury is solid and
is covered withis covered with
craters.craters.
 Mercury has almostMercury has almost
no atmosphere.no atmosphere.
 Mercury is the eighthMercury is the eighth
largest planet.largest planet.

9. VenusVenus
 Venus is the sixthVenus is the sixth
largest planet. It’slargest planet. It’s
about three-fourthsabout three-fourths
the size of earth.the size of earth.
 The surface is rockyThe surface is rocky
and very hot. Theand very hot. The
atmosphereatmosphere
completely hides thecompletely hides the
surface and traps thesurface and traps the
heat.heat.

10. EarthEarth
 Earth is the fifth largest planet and the third fromEarth is the fifth largest planet and the third from
the sun.the sun.
 Liquid covers 71 percent of the Earth’s surface.Liquid covers 71 percent of the Earth’s surface.
 The Earth has one moon.The Earth has one moon.

11. MoonMoon

12. MarsMars
 Mars is the fourthMars is the fourth
planet from the sun.planet from the sun.
 Mars has a thinMars has a thin
atmosphere thatatmosphere that
contains mostlycontains mostly
carbon dioxide.carbon dioxide.
 Mars has two smallMars has two small
moons.moons.

13. Moons of MarsMoons of Mars
PhobosPhobos
DeimosDeimos

14. JupiterJupiter

15. Jupiter’s Red SpotJupiter’s Red Spot
 The Great Red Spot,The Great Red Spot,
a huge storm ofa huge storm of
swirling gas that hasswirling gas that has
lasted for hundreds oflasted for hundreds of
years.years.
 Jupiter does not haveJupiter does not have
a solid surface. Thea solid surface. The
planet is a ball ofplanet is a ball of
liquid surrounded byliquid surrounded by
gas.gas.

16. Moons of JupiterMoons of Jupiter
Jupiter has four large Galilean moons,Jupiter has four large Galilean moons,
twelve smaller named moons and twenty-twelve smaller named moons and twenty-
three more recently discovered but notthree more recently discovered but not
named moons.named moons.
We’ll take a look at the four large GalileanWe’ll take a look at the four large Galilean
moons which were first observed bymoons which were first observed by
Galileo in 1610.Galileo in 1610.

17. IoIo
 Io is the fifth moon ofIo is the fifth moon of
Jupiter. It’s the thirdJupiter. It’s the third
largest of Jupiter’slargest of Jupiter’s
moons.moons.
 Io has hundreds ofIo has hundreds of
volcanic calderas.volcanic calderas.
Some of the volcanoesSome of the volcanoes
are active.are active.

18. EuropaEuropa
 Europa is the sixth ofEuropa is the sixth of
Jupiter’s moons and isJupiter’s moons and is
the fourth largest.the fourth largest.
 It is slightly smaller thanIt is slightly smaller than
the Earth’s moon.the Earth’s moon.
 The surface stronglyThe surface strongly
resembles images of searesembles images of sea
ice on Earth. There mayice on Earth. There may
be a liquid water seabe a liquid water sea
under the crust.under the crust.
 Europa is one of the fiveEuropa is one of the five
known moons in the solarknown moons in the solar
system to have ansystem to have an
atmosphere.atmosphere.

19. GanymedeGanymede
 Ganymede is theGanymede is the
seventh and largest ofseventh and largest of
Jupiter’s knownJupiter’s known
satellites.satellites.
 Ganymede hasGanymede has
extensive crateringextensive cratering
and an icy crust.and an icy crust.

20. CallistoCallisto
 Callisto is the eighth of Jupiter’s known satellitesCallisto is the eighth of Jupiter’s known satellites
and the second largest.and the second largest.
 Callisto has the oldest, most cratered surface ofCallisto has the oldest, most cratered surface of
any body yet observed in the solar system.any body yet observed in the solar system.

21. SaturnSaturn
 Saturn is the second largest planet and the sixthSaturn is the second largest planet and the sixth
from the sun.from the sun.
 Saturn is made of materials that are lighter thanSaturn is made of materials that are lighter than
water. If you could fit Saturn in a lake, it wouldwater. If you could fit Saturn in a lake, it would
float!float!

22. Rings of SaturnRings of Saturn
 Saturn’s rings are notSaturn’s rings are not
solid; they aresolid; they are
composed of smallcomposed of small
countless particles.countless particles.
 The rings are veryThe rings are very
thin. Though they’rethin. Though they’re
250,000km or more in250,000km or more in
diameter, they’re lessdiameter, they’re less
than one kilometerthan one kilometer
thick.thick.

23. UranusUranus
 Uranus is the thirdUranus is the third
largest planet and thelargest planet and the
seventh from the sun.seventh from the sun.
 Uranus is one of theUranus is one of the
giant gas planets.giant gas planets.
 Uranus is blue-greenUranus is blue-green
because of thebecause of the
methane in itsmethane in its
atmosphere.atmosphere.

24. NeptuneNeptune
 Neptune is the fourthNeptune is the fourth
largest planet and thelargest planet and the
eight from the sun.eight from the sun.
 Because of the orbits,Because of the orbits,
from 1979 to 1999,from 1979 to 1999,
Neptune was theNeptune was the
ninth planet.ninth planet.
 Like Uranus, theLike Uranus, the
methane givesmethane gives
Neptune its color.Neptune its color.

25. PlutoPluto
 Pluto is the smallestPluto is the smallest
planet and usually theplanet and usually the
farthest from the sun.farthest from the sun.
 Pluto is the onlyPluto is the only
planet that has notplanet that has not
been visited by abeen visited by a
spacecraft.spacecraft.
 It is now consideredIt is now considered
to be ato be a Dwarf planetDwarf planet ..

26. CONSTELLATIONSCONSTELLATIONS

27. A group of stars is referred as aA group of stars is referred as a
constellationconstellation
some examples are : Cassiopeia , Orionsome examples are : Cassiopeia , Orion
etcetc..

28. COMETSCOMETS
 AA cometcomet is an icy small Solar Systemis an icy small Solar System
body that, when passing close to the Sun,body that, when passing close to the Sun,
heats up and begins to outgas, displayingheats up and begins to outgas, displaying
a visible atmosphere or coma, anda visible atmosphere or coma, and
sometimes also a tail.sometimes also a tail.
 HALLEY’S COMETHALLEY’S COMET is an example of comet.is an example of comet.
It occurs once in 76 years.It occurs once in 76 years.

29. STARSSTARS