We opened the Golden Envelope and read our special science question
Our question - Balloon Rockets - "Does the shape of the balloon affect the distance the rocket travels?"
We discussed it and -our prediction was - "We think it will!"
This raised a lot of other questions:
We discussed it and -our prediction was - "We think it will!"
This raised a lot of other questions:
"How can we test it?"
"How will we measure the distances?"
"How will we record our results?"
"Why does this happen?"
We created our test - We made two rocket balloons, one with a round balloon and one with a long balloon. 
We tried to make sure that we put the same amount of air in each balloon. We first sent the round balloon along our taut string and measured the distance it travelled.We then sent the long balloon along our taut string and measured the distance it travelled.
We tried to make sure that we put the same amount of air in each balloon. We first sent the round balloon along our taut string and measured the distance it travelled.We then sent the long balloon along our taut string and measured the distance it travelled.
Our results:Round balloon - 422cm
Long balloon - 728cm
Our conclusion -The long balloon travelled 306cm further.The science -The long thin balloon cuts through the air easier. It has a streamlined shape (like a bird or a fish).It meets less resistance than the round ballon.Perhaps this is why all the rockets you see are LONG!
If you want to make a balloon rocket look on www.sciencebob.com/experiments/balloonrocket.php
No comments:
Post a Comment