____________________
are
waves
of
energy
that
pass
through
Earth
caused
by
a
sudden
shift
of
the
crustal
____________________
along
fault
lines
.
Earthquakes
can
cause
sudden
changes
that
alter
the
Earth's
landscape
dramatically
.
You
know
you
are
in
an
earthquake
if
the
ground
starts
to
____________________
.
Tremendous
forces
under
Earth's
surface
build
up
pressure
,
which
is
released
in
____________________
along
a
fault
.
Imagine
you
are
bending
a
Popsicle
stick
.
When
the
pressure
is
great
enough
,
the
stick
snaps
in
two
.
The
____________________
released
by
the
snap
produces
waves
that
travel
through
the
stick
to
your
hands
.
Earthquakes
can
create
____________________
on
the
Earth's
surface
.
____________________
can
form
during
an
earthquake
as
the
____________________
rocks
slide
down
and
the
mountain
rocks
move
up
.
During
an
earthquake
,
a
fault
may
slip
deep
underground
and
leave
no
evidence
on
the
surface
that
an
earthquake
has
occurred
.
Earthquakes
in
the
ocean
may
cause
a
____________________
,
a
large
ocean
wave
.
Scientists
use
____________________
to
measure
and
record
the
____________________
and
locations
of
earthquakes
.
They
measure
earthquakes
in
various
ways
,
including
from
1
-
10
on
the
____________________
____________________
.
Any
earthquake
measuring
a
6
or
higher
is
a
very
significant
earthquake
.
____________________
try
to
predict
when
and
where
earthquakes
will
occur
because
earthquakes
cause
loss
of
life
and
property
damage
every
year
all
over
the
world
.
