Download the solar system

THE SOLAR SYSTEM
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Is composed of:
a) The Sun: is a medium-sized star that emits its own light. It is composed of about 75%
hydrogen, 25% helium and other elements.
b)
A group of planets, dwarf planets and satellites.
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Planets are Mercury, Venus, Earth Mars, Jupiter, Saturn, Uranus and Neptune.
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Dwarf planets are Pluto, Ceres, Eris and other.
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Satellites are large natural bodies that orbits a planet.
c) Comets
--------------------------------------------------------------------------------------------------------------------Planets (study the photocopy)
Between the orbits of Mars and Jupiter there is the Asteroids Belt
Dwarf planets
c) Comets: consist of rocks, ice and dust.
They come from the Kuiper Belt (short period comets) or the Oort Cloud (long period comets)
Tails of the comets are always directed away from the Sun
Where do comets come from?
Short period comets come from Kuiper Belt.
Long period comets come from Oort cloud.
Movements of the planets
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Revolution: is the movement of the planets around the Sun. All of the orbits, excluding
Pluto, are approximatedly on the same plane.
The time that a planet takes to orbit the Sun is called a year.
All the planets move anticlockwise around the Sun.
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Rotation: most planets rotate around an imaginary axis. The time that a planet takes
to rotate on its own axis is called a day. The Earth rotates anticlockwise.