| You must
have heard that water
transmits any pressure
applied to it. Fair enough,
but how can you check
that? Well, this simple
game is one way to find
out for yourself. |
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| What
you need: |
|
|
A
deep tray
(or you can use the
kitchen sink instead)
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| Down
to business |
|
Pierce
holes using the
scissors at different
heights in the
sides of the
water bottle.
To see the effect
clearly, it's
best to make
the holes about
5 cm (2 inches)apart.
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|
|
So as
not to make a mess
with the water, put
the bottle on a tray,
or in the sink if you
prefer. And of course
you have to fill it
up with water. |
As
you'd expect, the
water comes spurting
out of the holes, but
take a closer look
to see how strong each
spurt is? You?ll see
that the lower the
hole, the greater the
pressure.
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| So
what's going on? |
|
The
higher the water-column
above the spurt
is, the stronger
the spurt will
be ? it will come
out with more pressure
behind it. So the
shape of that water
column doesn?t
matter: the height
of the liquid is
all that matters.
And that goes for
water in a plastic
bottle ? or in
the sea.
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