Andrew
and David's Science Fair Project
Andrew
and David's Science Fair Project
"Puckology"
In
our project we looked at how the temperature of the puck affects its bounce and
maneuverability.
Experiment
#1
Hypothesis
We
think a frozen puck will bounce less than a warm puck.
Materials
Metre
stick, Duct tape, Barbeque tongs, 3 official AHL pucks (one frozen, one boiled,
one a room temperature)
Procedures
We
taped the metre stick to the boards. We
used barbeque tongs to hold the puck over the ice.
We rested our arms over the board to make sure we didn’t put any force
on the puck. We dropped each puck
several times and compared how high each puck bounced compared to the others.
Results
It
was difficult to figure out exactly how high each puck bounced since the pucks
bounced very quickly. However we
could tell the boiled puck bounced the highest.
The frozen puck hardly bounced at all.
It seemed to land completely flat. Therefore
our hypothesis was right. We learned that rubber is a polymer with high entropy.
This means the polymer strings are all mixed up.
When rubber hits another object the polymer strings temporarily stretch.
As the polymer strings snap back to place the rubber object bounces.
When you add heat to rubber it gains energy.
Therefore when it hits another object the polymer strings stretch further
and snap back further. This causes
a higher bounce than a cold rubber object.
Experiment
#2
Hypothesis
A
cold puck will slide easier across the ice.
Materials
A
frozen puck, a boiled puck and a hockey stick.
Procedure
We
set each puck on the ice and gently tapped each puck across the ice.
We did this twice.
Results
The
frozen puck moved more freely across the ice.
The warm puck seemed to stick to the ice a bit.
Therefore our hypothesis was correct.
We learned about friction. Friction
eventually made both the frozen and boiled pucks stop.
However there was less friction with the frozen puck because it was
similar to ice moving on ice. In
this case there is very little friction.
Vocabulary
Conclusion
A frozen puck is better because is
bounces less and moves across the ice easier than a warm puck.
This will give us more control when playing hockey.
With more control we will score more goals!!
Project Summary
How did we
come up with our project idea?
WE REALLY LIKE HOCKEY. WE PLAY IT
ALMOST EVERY DAY OF THE WEEK. SO WE WANTED TO DO OUR PROJECT ON SOMETHING TO DO
WITH HOCKEY.
What did we
learn from our experiment?
WE LEARNED ABOUT RUBBER AND YOU HAVE A LOT MORE CONTROL WITH A
FROZEN PUCK.
How close
were our hypotheses and conclusions?
OUR HYPOTHESES WERE CORRECT.
Did we
learn anything new from our project?
WE LEARNED THAT A HOT PUCK BOUNCES A LOT MORE THAN A COLD PUCK.
What was
the most interesting part of our project?
THE MOST INTERESTING PART OF OUR PROJECT IS THAT WE LEARNED THE NHL
CHANGES THE PUCK EVERY 3 MINUTES DURING A GAME.
