Download All About Planets

All
About
Planets
By: Maggie Watts
Mercury
Mercury
This planet is not large
enough for its gravity to hold
onto a moon or much of an
atmosphere.
Venus
.
Venus
The surface is hot (869F)
and the atmosphere is
dense and contains
carbon dioxide and
sulfuric acid.
Earth
Earth
This planet has volcanic eruptions
and earthquakes. Sunlight, a
nitrogen and oxygen-rich
atmosphere, large oceans and the
greenhouse effect make climates
that supports life.
Mars
Mars
The largest canyon in the solar
system, Valles Marineris, as
wide as the United States,
might have had running water.
Largest volcano in the solar
system, Olympus Mons.
Asteroids
Asteroids
A wide belt of small objects that
orbit the sun between Mars and
Jupiter. Sometimes they are
called minor planets. They might
be remains of a planet pulled
apart or leftovers from the
formation of the solar system.
Jupiter
Jupiter
The largest planet has an
atmosphere of cold hydrogen
gas. It has many moons, so far
17 have been found. It has a
giant red spot that is thought to
be a storm.
Saturn
Saturn
Mostly gas, but less dense,
making it very light that it could
float on water. It has 18 moons.
It is known for its beautiful rings
which are made up of millions of
bits of ice.
Uranus
Uranus
Atmosphere of methane
gas and a set of dark,
narrow rings that run from
top to bottom, instead of
around.
Neptune
Neptune
Is the bluest planet
because of its methane
gas atmosphere. Its
moon, Triton, has
volcanoes.
Pluto
Pluto
Does not have a thick
atmosphere. Has one moon
called Charon, discovered in
1930. No longer considered
a planet, but a minor planet.
Comets
Comets
 These
are chunks of ice and
rock left over from the
formation of our solar system.
They move around the sun in
long oval-shaped orbits.
Meteoroids
Meteoroids
Part of the dust and
gas trail left behind
by a comet.
Meteors
Meteors
Parts or pieces of meteoroids
that stream into our
atmosphere from space. Often
not bigger than a grain of sand,
causing a flash of light,
sometimes called shooting
stars.
Meteorite
Meteorite
A piece of rock that
falls and lands on the
earth from space.
SETI
SETI
Search for Extraterrestrial
Intelligence
Message beamed into space by
world’s biggest radio telescope
at Arecivo, Puerto Rico (1992)
Coded information
What is the
relationship
between comets
and meteors??
Meteors were once
meteoroids (pieces of dust
and rocks) found in the tail of
the comets, but have fallen
to Earth.