Materials
To make the lungs is necesary :
- Scissors
- Two drinking straws
- Heat tape
- Packet of ballons
-Clear plastic soda bottle
First Step:
We took the bottle and cut through the bottom.Then we had to clean it on the inside because it had a few of water. We put soap, water and dry it.
Second Step:
After washing the bottle, we ironed the cut side for didn't break the balloon, that we use like a diaphragm.
After filing, we took the cap and got two straws glued with adhesive tape so
that they cannot move.
Fourth Step:
We take two balloons ,we cut the top and we stick them to one end of the
straw with the heat tape.
Fifth Step:
We take another balloon and we cut it too, then we
put it at the end of the bottle.
Finally we check if it worked...
Problem and Solution
Problem:
-The balloon that had to be put at the end of the bottle, as a diaphragm, was very difficult to put. The balloons were too small we broke four. ¬¬''
Solution:
-The solution found was take one of the small balloons and inflate it to make it easier to handle.
