172
The
Sun
is
at
the
centre
of
the
Solar
System.
It
gives
out
light
and
heat
energy,
and
its
gravity
keeps
nine
planets
in
orbit.
The
planets
all
move
anti-clockwise
in
their
orbit,
and
may
have
their
own
moons
orbiting
the
planets.
Moving
out
from
the
Sun,
the
planets
are
Mercury,
Venus,
Earth,
Mars,
Jupiter,
Saturn,
Uranus,
Neptune
and
Pluto.
The
first
four
planets,
Mercury,
Venus,
Earth
and
Mars
are
all
small,
rocky
and
volcanic.
The
next
four
planets,
Jupiter,
Saturn,
Uranus
and
Neptune
are
all
huge,
and
called
the
Gas
Giants.
Pluto
is
a
very
small
planet
on
the
outside
of
the
Solar
System.
It
is
very
cold
as
it
is
so
far
from
the
Sun,
and
it
takes
about
250
years
to
orbit
the
Sun
once.
The
Solar
System
is
part
of
our
galaxy,
a
collection
of
billions
of
stars
known
as
the
Milky
Way.
Our
Sun
is
just
an
ordinary
star
in
the
Milky
Way.
The
Milky
Way
is
one
of
millions
of
galaxies
that
make
up
the
Universe.
Drag the Tiles into position to put the segments of text into the correct order.
Unscramble the text by putting the words below into the correct order in the box above.

20
"Sun",2
"heat",16
"nine",22
"move",29
"Mercury,",51
"Venus,",52
"Earth,",53
"Mars,",54
"Jupiter,",55
"Saturn,",56
"Uranus,",57
"Neptune",58
"Pluto.",60
"small,",72
"Solar",104
"cold",109
"galaxy,",136
"star",154
"galaxies",167
"Universe.",172
Fill in the gaps by typing in the missing word, or by dragging the correct word from the list below.
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