Cayla Cornwell P.d. 5 9/16/13 chemistry
What I plan to do is stick the raw egg between the two sponges and place them in the sour cream container with the lid. Hope
fully the lid will stay secure during my first test.
My hypothesis for this structure is that although the pyramid may collapse the egg will come out unharmed because of the sponges and the sour cream container giving it the appropriate amount of cushion so it doesn't break.
I built this structure by:
1.) form a base with shish kabob sticks. To hold them together I used wire.
2.)Next, make the top part of the pyramid by forming two of them in a triangle and tying them together, the adding another set.Attach them together by using wire also
3.)Then, take two more sticks and form them into an X shape to support the bottom half of the structure. Attach them with electrical tape.
4.)Take your sour cream container and make two holes on each side of it using scissors.
5.)Take a paper clip and bend it so you can slip into one of the two holes you just made. then take the top part of the paper clip and push it through the second hole you made on that same side. Repeat on oppsite side.
6.)Put two rubber bands on each paper clip. Put tape in the middle to separate them. Then take the top rubber band on each side and place over the top sticks of the structure.
7.) Take the bottom rubber bands and attach them at the bottom with a tied rubber band.
8.)Add the sponges, egg, and lid.
Mass of structure without egg: 82.5grams
Calculation: 2000/82.5g*5pts.=
121.21 = B-
Mass of structure with egg: 90.0grams
Test# 2:For the second drop I threw it about 15ft high and the egg came out completely unharmed and the structure maintained some damage to the sour cream cup causing the paper clip to become unattached.
Test# 3:For the third drop, the egg was thrown in the atrium of the school and the egg had cracked.
Post Lab:
My final design didn't change at all from when I first designed it. It is still made out of kabob sticks, wire, electrical tape,etc....
The purpose of having multiple test drops is to see what your structure can stand to complete the goal of a non-broken egg.
At first the structure prevented the egg from breaking because the rubber bands held the container in place and the sponges kept the egg from feeling the impact of the fall/drop. After the first two drops the egg cracked because the rubber bands weren't holding the container as they should. During the third drop the rubber bands had broken because of the force of impact.
If I could change the design in any way I would have to say I would change the rubber bands holding the container. I would change this because if I had something sturdier then maybe the egg wouldn't have cracked because it would have never felt the impact of the ground/floor.
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