1
2
Tub
YOU NEED …
2 x syringes
You will also need:
tap water, ruler,
scissors, watercolor
paint (or dye)
10-cm tube
HERE’S HOW!
1
Assemble the syringe holder by sliding the
two legs into the holder, one from the front and
the other from behind.
2
With the scissors, cut off a 10-cm piece of tube.
Make sure that you cut the end of the tube in
a straight line. Connect one end of the tube to
the opening at the bottom of one of the syringes.
To do this, position the end of the tube over the
nozzle, then push the tube onto the nozzle until
it can’t go any further. If it’s too tricky, ask your
parents for help.
3
Fill the syringe with tap water, as shown in the
drawing below. Fill the tub halfway with water.
Hang the end of the tube over the side of the tub
and pull out the plunger. The syringe is now filled
half with air, half with water. Hold the syringe
upright and push all the air out (and out of the
tube too). Finally, pull the plunger out fully.
2 x plain wood
sheets
Tip!
If you like, you can also add color to the
water using some watercolor paint or dye.
This will make it easier to see what’s going
on in the syringes and tubes. If you’re using c
olored
water, make sure you stay away from carpets, curt
ains,
or other fabrics, and remember to wear ol
d clothes.
9
Wonder of Water
and the
3
