1. Natural Sciences and Technology Grade 6
Term 4: Planet Earth and Beyond
The Solar System
(ppt 3)

2. Natural Sciences and Technology - Grade 6
Topic 1 The Solar System
The Planets
Natural Sciences and Technology - Grade 6

3. Natural Sciences and Technology - Grade 6
Outer Planets
Known as the gas giants.
Some have many moons.
Natural Sciences and Technology - Grade 6

4. Natural Sciences and Technology - Grade 6
Jupiter
It is the fifth planet from the Sun and also the largest planet.
First gas planet [90% hydrogen - has clouds of ammonia and 10% helium].
Mass is 318 times that of Earth.
Takes 12 years to orbit the Sun.
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5. Natural Sciences and Technology - Grade 6
Jupiter
Three thin dark rings, made of dust.
4 big moons and 60 smaller moons.
Fast winds blow from east to west.
Colour is light pink-brown.
Distance from the Sun is km.
Surface temperature is -145 ºC.
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6. Natural Sciences and Technology - Grade 6
Saturn
Saturn is the sixth planet.
Gas planet of hydrogen and helium.
Famous for its bright colourful rings made of frozen water.
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7. Natural Sciences and Technology - Grade 6
Saturn
Furthest planet from Earth that can be seen without a telescope or binoculars.
Has 62 moons.
It takes years to orbit the Sun.
The average temperature is -141ºC.
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8. Natural Sciences and Technology - Grade 6
Uranus
A smooth blue-green gas planet.
It is called an ‘ice giant,’ because it is mostly made of frozen gas [hydrogen, helium and methane].
It has 9 dark and 2 brightly coloured rings.
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9. Natural Sciences and Technology - Grade 6
Uranus
It has 27 known moons.
Uranus turns on its axis once every 17 hours and 14 minutes.
It takes 84 years to orbit the Sun.
The average temperature is -216 ºC.
Its distance from the Sun is M km.
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10. Natural Sciences and Technology - Grade 6
Neptune
It is the furthest away from the Sun.
It is a gas planet.
It has fast, strong winds of km/h.
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11. Natural Sciences and Technology - Grade 6
Neptune
14 Moons.
It takes 165 years to orbit the Sun.
Surface temperature is
-201 °C.
It was discovered on the 23rd September 1846.
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12. Natural Sciences and Technology - Grade 6
Dwarf Planets
Dwarf planets are also known as a planetoids/plutoids.
Eris
Pluto
Ceres
Haumea
Makemake
Natural Sciences and Technology - Grade 6

13. Natural Sciences and Technology - Grade 6
Pluto
It is no longer a planet since 2006.
Largest known dwarf planet.
It has an irregular orbit – tilted and elongated.
Surface temperature is -225 °C.
It has 5 moons – one is very large.
Natural Sciences and Technology - Grade 6

14. Natural Sciences and Technology - Grade 6
Eris
Orbit period around the Sun is 560 years.
It was discovered on 5th January 2005.
It has only one moon, known as Disnomia.
Natural Sciences and Technology - Grade 6

15. Natural Sciences and Technology - Grade 6
The Inside Story
What rock planets look like inside:
Natural Sciences and Technology - Grade 6

16. Natural Sciences and Technology - Grade 6
The Inside Story
What gas planets look like inside:
Natural Sciences and Technology - Grade 6