Aas each tiny thing (atom) changes {t produges a kind of energy which we
cannot
ace
ghanged,
and
which
thia anargy
fis
called
is gone
"radiation."
from
thea.
When
(Furtner
they
have
complately
explanation of radiation
appears on page 4.)
Of the things that are radioactive some have always been a park of the
world.
Thesé are Gademade and they will
not go away.
They are in soil,
in
water, in food-bearing plants and other plants, in animals, and in our pdodies.
There are also radiaactive things that came from the atomic bombs.
of these changed quickly ~ during just a few minutes or days.
Some
Bub the others
change slowly and are still present on the islands in the Bikini Atoll.
names
of
some
of
the
important
radioactive
strontium, plutonium, ami americium.
after
§
years.
Of
the
part
that
things
are
remains,
cesium and one-half of the strontium will
that
remains,
proces3a will
one-half
again continue
will
cesiun,
Oneehalf of the cobalt will disappear
onewhalf
will
another 5 years and this process will continue indefinltely.
part
cobalt,
The
after
another
Plutonium and
after
One-half of the
disappear after 30 yeara.
digappear
indefinitely.
disappear
30
Of the
years,
americium willl
This
not
change over hundreds and hundreds of years.
ENERGY CALLED RADIATION
The energy
light
of the aun
from radioactive mster{ala is gimilar
in
that
it
travela
from Where
jt
is
to heat of
formed
fire
and
to other places}
however, we cannok see it, hear it, taste it, amell jk, or feel ik.