Download presentation

INTERESTING
FACTS
Grupo Donos 2008
The Solar System
Our solar system has
eight planets and one
star: the Sun.
The planets are (in order,
from the Sun,
outward):
Mercury, Venus, Earth,
Mars, Jupiter, Saturn,
Uranus and Neptune.
This mnemonic helps us remember the planets in order:
My Very Educated Mother Just Served Us Nachos
Grupo Donos 2008
Pluto is no longer a
planet, according to
astronomers.
Grupo Donos 2008
In 1993, astronomers
discovered thousands of
objects similar to Pluto in
size and composition, in
the region of Pluto’s orbit.
Pluto does not fit with
either the rocky planets
(Mercury, Venus, Earth,
and Mars) or the gas giant
planets (Jupiter, Saturn,
Uranus, and Neptune).
Grupo Donos 2008
The solar system is about 4.5 billion years old.
Grupo Donos 2008
Planets come in different sizes and colours.
Mercury
Earth
Venus
Mars
Grupo Donos 2008
The four planets closer to the Sun are called rocky
or terrestrial planets. They are small in size and
similar to Earth in composition.
Mercury
Earth
Venus
Mars
Grupo Donos 2008
The rocky planets have no rings, and only two of
them (Earth and Mars) have moons.
Mercury
Earth
Venus
Mars
Grupo Donos 2008
The four outer planets, called gas giants, are
much larger than the rocky planets.
Jupiter
Saturn
Uranus
Neptune
Grupo Donos 2008
The gas giants all have rings and many moons.
They are made up mostly of hydrogen, helium,
frozen water, ammonia, methane, and carbon
monoxide.
Jupiter
Saturn
Uranus
Neptune
Grupo Donos 2008
Some planets can be
seen with the
naked eye,
which is how
they were
discovered by
the ancient
civilizations.
They are
Mercury, Venus,
Mars, Jupiter,
and Saturn.
Grupo Donos 2008
The other two planets —Uranus and Neptune—
and Pluto were discovered using a telescope.
Grupo Donos 2008
Jupiter, Saturn, Uranus and Neptune have rings.
Grupo Donos 2008
Earth is not the largest object in the solar system.
Grupo Donos 2008
Stars and galaxies are part of the universe,
not only part of the solar system.
Grupo Donos 2008
The sun is a star.
Grupo Donos 2008
Quiz on the Solar System
Grupo Donos 2008
Choose the correct answer
The sun is…
• a comet
• an asteroid
• a star
Grupo Donos 2008
The sun is a star
Grupo Donos 2008
How old is our solar system?
•It’s about 3.5 billion years old
•It’s about 4.5 billion years old
•It’s about 8.5 billion years old
Grupo Donos 2008
How old is our solar system?
• It’s about 4.5 billion years old
Grupo Donos 2008
Which planets are called “ rocky”?
• Mercury, Earth, Mars and Jupiter.
• Mercury, Venus, and Earth.
• Mercury,Venus, Earth and Mars.
Grupo Donos 2008
Rocky planets
Mercury
Earth
Venus
Mars
Grupo Donos 2008
Which planets have rings and moons?
• Rocky planets
• Gas planets
Grupo Donos 2008
Which planets have rings and moons?
• Gas planets
Grupo Donos 2008
Which planets can be seen with the naked eye?
• Mercury, Venus,
Mars, Saturn, and
Uranus.
• Mercury, Venus,
Mars, Jupiter, and
Neptune.
• Mercury, Venus,
Mars, Jupiter, and
Saturn.
Grupo Donos 2008
Which planets can be seen with the naked eye?
• Mercury, Venus,
Mars, Jupiter, and
Saturn.
Grupo Donos 2008
Which is the correct answer?
• Jupiter, Saturn, Uranus and Neptune have rings
• Mars, Saturn, Uranus and Neptune have rings
• Earth, Saturn, Uranus and Neptune have rings
Grupo Donos 2008
Which is the correct answer?
• Jupiter, Saturn, Uranus and Neptune have rings
Grupo Donos 2008
Is it true or false?
• Earth is the largest object in the solar system.
• Stars and galaxies are part of the universe not
only part of the solar system.
• The sun is a star.
F
T
T
Grupo Donos 2008