Winner is the person, or team of 2, who successfully extinguishes the most number
You may use any non-explosive
safe materials to build your acoustic cannon.
The acoustic cannon will be 15-18
feet from the target -lit candle. Distance is measured from the front of your device to the candles.
You may place the acoustic cannon
on a table to aim it. Someone else may assist you in holding it if necessary.
You will get 5 shots alternating
between two candles 15 feet apart
The acoustic cannon must propel
a vortex ring of air at the target.
No explosives or flammables substances.
No cartridges of compressed air.
No compressed air containers. All entries must blow a vortex ring of air at the targets.
No commercially made devices that shoot vortex rings. Such as, but not limited to, the "Air Bazooka." It must be handmade by you.
You may work with a partner. Your partner can be in any physics class at Albemarle during any period. If you are part of a team of two students in different classes and periods, then you must decide which class period's results wil be used for the contest before the first time one of you can shoot at the targets.
5 points added to a test for
an entry that meets the contest criteria and does not need any repairs before firing
ALL 5 shots.
1 additional point added to a
test for each extinguished candle flame.
3 additional points for the two boxes that are decorated with the coolest theme that incorporates the hole.
Each person will receive the total amount of points. They will not be split up.
2 Competition Divisions:
TACTICAL CANNONS DIVISION: All containers less than 30 gallons or 6930 in3 will be in this division. (To calculate the volume in inches. multiply the box's height, width, and depth.) Trash cans are advertised by the number of gallons they can hold. This is where most cannons fit.
VAST VORTEX CANNONS DIVISION: All containers equal to or greater than 30 gallons will be in this division.
During your physics class on the Monday or Tuesday before the Thanksgiving break.
Practice your aim. Shoot at curtains. You can see where they are hit when they move. If you don't see them move, you probably will not blow out any candles.
Do not shoot at lit candles. When the candles are blown out, candle wax will spray on the table the candles sit on. This will make a horrible mess. If the candles are near anything flamable, they may catch other stuff on fire.
by Tony Wayne ...(If you are a teacher, please feel free to use these resources in your teaching.)
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