4M Эко энергия (00-03287) [4/6] Trick 6 cartesian diver
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4M Эко энергия (00-03287) [4/6] Trick 6 cartesian diver

4M Эко энергия (00-03287) [4/6] Trick 6 cartesian diver
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YOU’LL NEED
TRICK 6 : CARTESIAN DIVER
Assembly
1. Stick score labels onto the different weights (there are two
labels for each weight).
2. Push the three copper washers onto the neck of the dropper,
and then push the hook onto the end of the neck. The will
make the diver.
3. Squeeze the dropper gently, hold the opening under water
and suck up water so that the dropper is about two-thirds
full.
Operation
Fill the plastic bottle with water, leaving a small air space at
the top. Drop in the weights, then the diver and then screw on
the bottle lid. If your diver sinks, it is too heavy. You need to
squeeze the tube to get rid of a little water. Keep going until
the diver just oats under the water level. Gently squeeze the
bottle. The diver should sink to the bottom. If it does not, it is
too light and you need to suck some more water into it. Stop
squeezing the bottle and the diver should surface again. Can
your diver hook a weight and bring it to the surface? What
score did you get? Challenge your friends or family to see who
will get the highest score.
Trouble shooting
If you diver does not sink when you squeeze the bottle, it is too
light, you need to suck in some more water into the diver tube.
If your diver does not resurface when you release the bottle,
it is too heavy. You need to squeeze the diver tube to get rid
of a little water.
How it works
When you squeeze the bottle, the pressure inside the bottle
increases. This squeezes the air inside the dropper into a
smaller space, allowing more water to enter the dropper.
So the dropper becomes heavier, making it sink. When you
release the bottle, the pressure drops again. The air in the
dropper expands, pushing some water out. This makes the
diver lighter, and it floats to the surface.
From the kit: 1 dropper, 3 copper washers, 1 plastic hook, 6 plastic weights, score labels
Recycle: 1 plastic bottle (about 1 liter)
From Home: Water
Score labels
Two-thirds
full
Copper
washers
Plastic hook
Fun facts
• A submarine works in the same way as the Sinking Diver. To dive under the water, a submarine’s
ballast tanks are filled with water, which makes the submarine heavier. To surface again, the
water is blown out of the tanks with air.
• The deeper you go in water, the higher the pressure becomes. The pressure means it is impossible
for scuba divers to go down more than about 300 metres.
• Humans normally oat, so divers have to wear weights to help them dive.

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