Where
two
plates
collide
this
is
called
a
____________________
.
When
two
plates
move
apart
it
is
a
____________________
.
Three
are
____________________
types
of
convergent
boundaries
.
One
kind
of
convergent
boundary
is
when
a
continental
plates
collides
with
an
oceanic
plate
.
When
this
occurs
the
____________________
dense
plate
is
the
oceanic
plate
.
This
is
because
it
is
made
out
of
basalt
.
The
continental
plate
is
____________________
dense
because
it
is
made
out
of
mostly
granite
.
The
oceanic
plate
____________________
or
sinks
into
the
mantle
because
it
is
this
density
difference
.
This
sinking
causes
a
____________________
spot
to
form
in
the
water
where
the
two
plates
meet
.
This
low
spot
is
called
a
____________________
.
The
continental
plate
does
not
subduct
.
Instead
,
it
gets
____________________
.
But
,
the
____________________
currents
underneath
the
plate
continues
to
push
it
so
it
folds
up
and
down
creating
____________________
where
it
folds
up
and
____________________
where
it
folds
down
.
Finally
,
the
subducted
plate
____________________
as
it
heats
up
in
the
mantle
and
moves
closer
to
the
core
.
The
melted
crust
becomes
____________________
and
less
dense
,
rises
upward
,
and
goes
through
the
continent
above
.
This
creates
____________________
on
the
continent
.
There
is
another
boundary
that
subduction
like
this
also
occurs
.
This
is
when
two
____________________
plates
converge
.
The
only
difference
is
that
the
volcanoes
form
underwater
volcanoes
and
volcanic
____________________
.
Also
,
the
stuck
plate
creates
underwater
mountains
and
trenches
instead
of
valleys
.
In
addition
,
some
of
the
mountains
can
become
islands
if
they
are
____________________
enough
to
go
through
the
surface
of
the
ocean
.
When
two
____________________
plates
collide
no
plate
subducts
or
sinks
.
This
is
because
____________________
plates
have
a
low
density
.
As
a
result
,
both
plates
get
stuck
at
the
boundary
.
The
two
plates
continue
to
get
pushed
together
by
the
convection
____________________
so
they
both
fold
.
This
creates
mountains
where
they
____________________
and
valleys
where
the
plates
____________________
.
Because
there
is
no
subduction
there
are
novolcanoes
.
