I am a Year 5 student in Team Moana at Ohaeawai School in Northland, New Zealand. My teachers are Mrs Brajkovich, Miss Fletcher and Miss Stewart.
Thursday, 15 August 2019
scientific writing
TITLE
Balloon Hovercraft
QUESTION:
How does a hovercraft hover?
HYPOTHESIS
I predict that the balloon Hovercraft is going to stay on the table because it has no air pushing it up .
EQUIPMENT AND MATERIALS:
We need a cd water bottle lid and a balloon .
PROCEDURE:
Step 1: Hot glue the bottle cap over the cd hole.
Step 2: Blow up a balloon . When it is fully inflated twist the end so no air comes out .
Step 3: stretch the balloon end over the bottle lid.
Step 4: Open up the cap and place the cd on a table.
Step 5: Untwist balloon and let go .
OBSERVATIONS/RESULTS:
I found out that the hovercraft made a cushion of puff between the table.
CONCLUSION:
The air from the balloon creates a cushion of moving air between the disc and the surface and reduces the friction across the surface.
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