3. The planets travel in circular pathsThe planets travel in circular paths
(orbits) around the Sun.(orbits) around the Sun.
counter- clockwise
4. The solar system is made up ofThe solar system is made up of
two parts:two parts:
Inner planets Outer planets
5. The Inner PlanetsThe Inner Planets
MercuryMercury
VenusVenus
EarthEarth
MarsMars
Closest to the Sun
6. The Outer PlanetsThe Outer Planets
JupiterJupiter
SaturnSaturn
UranusUranus
NeptuneNeptune
7. The inner planets areThe inner planets are separatedseparated
from the outer planetsfrom the outer planets byby thethe
Asteroid BeltAsteroid Belt
8. Classification of the SolarClassification of the Solar
SystemSystem
By composition:By composition:
ROCKY PLANETSROCKY PLANETS
(Mercury - Venus - Earth - Mars )
• Made up of rock and metal
• Very heavy and move slowly
• Do not have rings
GAS PLANETSGAS PLANETS
(Jupiter - Saturn - Uranus - Neptune)
• Made up of gases (hydrogen and helium)
• They are light and move quickly
• They have rings
9. By size:By size:
SMALL PLANETS :
Mercury - Venus - Earth - Mars
GIANT PLANETS :
Jupiter - Saturn - Uranus - Neptune
10. THE SUNTHE SUN
The Greeks called itThe Greeks called it HeliosHelios
The Romans called itThe Romans called it SolSol
The symbol for the Sun:
Heliocentric system: All eight of our planets orbit the Sun
Helio centric
Sun is the centre
12. During an evening, if you see a full moon ,During an evening, if you see a full moon ,
take a coin and go outside.take a coin and go outside.
Hold your coin up (between your thumb andHold your coin up (between your thumb and
finger) towards the moon and close one eye.finger) towards the moon and close one eye.
Try to "cover up" the moon with your coin. This isTry to "cover up" the moon with your coin. This is
similar to how the Moon covers up the Sun.similar to how the Moon covers up the Sun.
13. The Sun is a star , planet.The Sun is a star , planet.
The Sun is the only star we see duringThe Sun is the only star we see during
the daytime.the daytime.
The SunThe Sun measures + thanmeasures + than
a million kilometersa million kilometers across.across.
The Sun is very, very hot.The Sun is very, very hot.
The Sun is about 75% hydrogen and 25%The Sun is about 75% hydrogen and 25%
heliumhelium
14. MercuryMercury
InIn Roman mythologyRoman mythology: the god of commerce,: the god of commerce,
travel and thieverytravel and thievery..
InIn Greek mythologyGreek mythology:: HermesHermes (the messenger(the messenger
of the Gods).of the Gods).
The symbol for Mercury:The symbol for Mercury:
Mercury is the closest planet to the sun.Mercury is the closest planet to the sun.
ItIt is a small, rocky planetis a small, rocky planet..
It has a liquid outer core.It has a liquid outer core.
15. Mercury is aMercury is a small, rocky planetsmall, rocky planet..
Mercury hasMercury has nono moonsmoons..
Its rotational period is 59 days.Its rotational period is 59 days.
The temperature on Mercury rangesThe temperature on Mercury ranges fromfrom
-180-180 ºCºC at nightat night to 425to 425 ºCºC in the dayin the day..
16. VenusVenus
It is the Roman goddess ofIt is the Roman goddess of lovelove andand
beautybeauty..
In Greek mythologyIn Greek mythology AphroditeAphrodite..
The symbol for Venus:The symbol for Venus:
It is the second planet from theIt is the second planet from the SunSun, and the, and the
sixth largest of all the planets.sixth largest of all the planets.
17. It is aIt is a small, rocky planetsmall, rocky planet ..
It is blanketed in a thick layer ofIt is blanketed in a thick layer of yellowishyellowish
cloudsclouds (made of water, formed from sulfuric(made of water, formed from sulfuric
acid).acid).
It is so similar to our Earth (It is so similar to our Earth (Earth's "sisterEarth's "sister
planetplanet.")..").
It hasIt has nono moons.moons.
18. EarthEarth
The symbol for Earth:The symbol for Earth:
Earth is the planet where we live.Earth is the planet where we live.
It is the only planet with life.It is the only planet with life.
71 % of the Earth's surface is covered with71 % of the Earth's surface is covered with
waterwater..
It has gravity.It has gravity.
19. The Earth's atmosphereThe Earth's atmosphere
Carbon dioxide (COCarbon dioxide (CO22) helps to maintain the) helps to maintain the
Earth's temperature ("Earth's temperature ("Greenhouse EffectGreenhouse Effect”).”).
Greenhouses work by trapping heat from
the sun.
The glass panels of the greenhouse let in
light but keep heat from escaping.
20. Pictures of our planet help in predicting thePictures of our planet help in predicting the
weather (especially in predicting hurricanes).weather (especially in predicting hurricanes).
The Earth's surface is veryThe Earth's surface is very youngyoung,, itit hashas
changed a lotchanged a lot..
Erosion and tectonic processes (earthquakes)Erosion and tectonic processes (earthquakes)
destroy, recreate and reshape most of thedestroy, recreate and reshape most of the
Earth's surface.Earth's surface.
21. The moon
The Moon takes 27.322 days to go around the
Earth once.
The moon moves east to west
It was calledIt was called LunaLuna by the Romans.by the Romans.
It was calledIt was called SeleneSelene andand ArtemisArtemis by the Greeks.by the Greeks.
This is the symbol for the Moon:This is the symbol for the Moon:
The Moon is theThe Moon is the Earth'sEarth's only natural satelliteonly natural satellite
23. Apollo 11
Astronaut Neil Armstrong taking his first
steps on the moon.
(The Earth is in the background)
24. It is aIt is a small, rockysmall, rocky planet.planet.
It's the mostIt's the most "co"compact" of all the planets.mpact" of all the planets.
The Earth is orbited by oneThe Earth is orbited by one moonmoon..
The earth isn't perfectly round, it is slightlyThe earth isn't perfectly round, it is slightly
fattened at the north and south poles.fattened at the north and south poles.
Mt Everest is the highest
mountain on earth.
The worlds largest desert is
the Sahara.
25. MarsMars
In Greek mythology is the god of War :In Greek mythology is the god of War :AresAres
The “Red Planet”.The “Red Planet”.
The month March derives from MarsThe month March derives from Mars
The symbol for Mars:The symbol for Mars:
It is the fourth planet from theIt is the fourth planet from the SunSun
It is aIt is a small, rocky planetsmall, rocky planet..
It hasIt has two tiny moonstwo tiny moons:: PhobosPhobos andand DeimosDeimos
26. It is a region between theIt is a region between the inner planetsinner planets
andand outer planetsouter planets..
Asteroids are chunks of rock and metalAsteroids are chunks of rock and metal
that orbit around the Sun.that orbit around the Sun.
The Main Asteroid Belt is located betweenThe Main Asteroid Belt is located between
MarsMars andand JupiterJupiter
27. JUPITERJUPITER
It was the King of the Roman Gods.It was the King of the Roman Gods.
To the ancient Greeks, he was known asTo the ancient Greeks, he was known as
ZeusZeus..
The symbol for Jupiter:The symbol for Jupiter:
It is the largest of all eight planets(318It is the largest of all eight planets(318
times bigger than thetimes bigger than the EarthEarth!)!)
28. Jupiter has high speed winds that whip byJupiter has high speed winds that whip by
at more than 400 mph!at more than 400 mph!
Each band has a slightly differentEach band has a slightly different
chemical make-up and temperature fromchemical make-up and temperature from
the others.the others.
Jupiter has 16 known moons!Jupiter has 16 known moons!
29. "The Great Red Spot." is an oval about"The Great Red Spot." is an oval about
12,000 km12,000 km byby 25,000 km25,000 km - big enough to- big enough to
hold twohold two EarthsEarths!!
Jupiter has rings likeJupiter has rings like Saturn'sSaturn's, but much, but much
smaller.smaller.
30. SATURNSATURN
In Roman mythology: the god of agricultureIn Roman mythology: the god of agriculture
It was the father ofIt was the father of ZeusZeus ((JupiterJupiter).).
The symbol for Saturn:The symbol for Saturn:
Saturn has verySaturn has very bright ringsbright rings ( NOT"solid" ,( NOT"solid" ,
they are composed of many, small particlesthey are composed of many, small particles
circling Saturn at their own speeds.)circling Saturn at their own speeds.)
It has 18 moons.It has 18 moons.
31. UranusUranus
It was the father ofIt was the father of SaturnSaturn in Romanin Roman
mythology.mythology.
The symbol for Uranus:The symbol for Uranus:
Uranus has rings, very dark.Uranus has rings, very dark.
It is aIt is a giant gas planet.giant gas planet.
It is made up of mostly rock and variousIt is made up of mostly rock and various
ices.ices.
32. NEPTUNENEPTUNE
In Roman mythology was the god of theIn Roman mythology was the god of the
Sea.Sea.
In Greek mythology:In Greek mythology: Poseidon.Poseidon.
The symbol for NeptuneThe symbol for Neptune
Neptune also has rings (very dark andNeptune also has rings (very dark and
very faint)very faint)