posted 14 Oct 2012, 05:25 by Joey Mob
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updated 14 Oct 2012, 05:25
]
Balloon powered boatWhat you need To do this activity you will need to gather: What to do -
Find
a clean, rectangular, margarine container and carefully make a hole in
the centre of one of the shorter sides about 1 cm from the bottom. -
Cut a straw in half and insert one end into the neck of a balloon. Fix the balloon firmly to the straw with a rubber band. -
Push
the straw through the hole in the marg container and seal it in place
with plasticine. Weigh the back of the marg container with more
plasticine in the centre. Blow the balloon up through the straw and
pinch the end to keep the air inside. -
Put the boat in the water, let go - and away she goes. This
is an example of Newton's third law of motion - every action has an
opposite and equal reaction. The air rushing out of the straw is the
action, and the equal reaction is the push against the boat in the
opposite direction. Can you improve the design of your boat? Source: http://www.csiro.au/en/Portals/Education/Programs/Do-it-yourself-science/Physical-sciences-activities/balloon-boat-activity.aspx
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