Prototype information
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The document describes a prototype boat made of a plastic bowl, balloon, aluminum foil, and paper cup. The balloon is taped inside the bowl and surrounded by aluminum foil to displace water and prevent leaks. A paper cup attached to the center of the balloon via tape is used to hold weights. The blueprint details the dimensions of each component. The purpose is to create a boat that can hold weight without becoming unbalanced, using a balloon for buoyancy and other materials for structure and to hold weight. Test results show the boat tipped over with more than 14.25g of mass on average due to uneven waterlogging.
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Prototype information
The document describes a prototype boat made from a plastic bowl, balloon, aluminum foil, and paper cup. The balloon is taped inside the bowl and surrounded by aluminum foil to displace water and prevent water from entering the bowl. A paper cup attached to the center of the balloon via tape is used to hold weights. The materials and dimensions of each component are listed, and the rationale for choosing each part is explained. The boat was tested by adding pennies until it tipped over, and data on the maximum mass held over 10 trials is displayed in a table, along with notes on the boat's behavior during testing.
Experimental results
The student investigated how the circumference of a balloon attached to a toy boat affected the mass of pennies the boat could hold without sinking. Testing balloons with circumferences of 0 cm, 20 cm, and 35 cm, it was found that the 0 cm balloon allowed the boat to hold the most mass on average. The hypothesis that a 20 cm balloon would outperform a 35 cm balloon was supported. Sources of error included water remaining in the boat between trials and uneven penny distribution. Balance was identified as an important factor, as larger balloons made the boat more prone to tipping. Removing unnecessary balloon and cup weight from the final design was recommended.
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Solicitação prateleiras
O memorando solicita autorização para a aquisição de prateleiras de madeira, um balcão de madeira e um quadro de acrílico para o laboratório. As prateleiras e o balcão seriam usados para armazenamento e trabalhos manuais, respectivamente. O quadro de acrílico seria usado para controle de cronogramas.
Second experimental results
This document summarizes an experiment comparing a boat with tape surrounding its bowl and balloon to one without tape. The boat with tape held an average of 14.25 grams across 10 trials, while the one without tape held only 5.5 grams on average. The author learned that the tape helps the aluminum foil adhere better to the bowl, preventing water from seeping in, which improves how much mass the boat can hold.
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Second experimental results
This document summarizes an experiment comparing a boat with tape surrounding its bowl and balloon to one without tape. The boat with tape held an average of 14.25 grams across 10 trials, while the one without tape held only 5.5 grams on average. The author learned that the tape helps the aluminum foil adhere better to the bowl, preventing water from seeping in, which improves how much mass the boat can hold.
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Prototype information
The document describes a prototype boat made from a plastic bowl, balloon, aluminum foil, and paper cup. The balloon is taped inside the bowl and surrounded by aluminum foil to displace water and prevent water from entering the bowl. A paper cup attached to the center of the balloon via tape is used to hold weights. The materials and dimensions of each component are listed, and the rationale for choosing each part is explained. The boat was tested by adding pennies until it tipped over, and data on the maximum mass held over 10 trials is displayed in a table, along with notes on the boat's behavior during testing.
Experimental results
The student investigated how the circumference of a balloon attached to a toy boat affected the mass of pennies the boat could hold without sinking. Testing balloons with circumferences of 0 cm, 20 cm, and 35 cm, it was found that the 0 cm balloon allowed the boat to hold the most mass on average. The hypothesis that a 20 cm balloon would outperform a 35 cm balloon was supported. Sources of error included water remaining in the boat between trials and uneven penny distribution. Balance was identified as an important factor, as larger balloons made the boat more prone to tipping. Removing unnecessary balloon and cup weight from the final design was recommended.
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Solicitação prateleiras
O memorando solicita autorização para a aquisição de prateleiras de madeira, um balcão de madeira e um quadro de acrílico para o laboratório. As prateleiras e o balcão seriam usados para armazenamento e trabalhos manuais, respectivamente. O quadro de acrílico seria usado para controle de cronogramas.
Second experimental results
This document summarizes an experiment comparing a boat with tape surrounding its bowl and balloon to one without tape. The boat with tape held an average of 14.25 grams across 10 trials, while the one without tape held only 5.5 grams on average. The author learned that the tape helps the aluminum foil adhere better to the bowl, preventing water from seeping in, which improves how much mass the boat can hold.
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Second experimental results
This document summarizes an experiment comparing a boat with tape surrounding its bowl and balloon to one without tape. The boat with tape held an average of 14.25 grams across 10 trials, while the one without tape held only 5.5 grams on average. The author learned that the tape helps the aluminum foil adhere better to the bowl, preventing water from seeping in, which improves how much mass the boat can hold.
Second experimental results
This document summarizes an experiment comparing a boat with tape surrounding its bowl and balloon to one without tape. The boat with tape held an average of 14.25 grams across 10 trials, while the one without tape held only 5.5 grams on average. The author learned that the tape helps hold the aluminum foil to the bowl, preventing water from seeping in, whereas without tape the water could enter between the bowl and foil.
Reflection questions
The student's final boat design was more effective than the original prototype. The final design held 426.5 grams on average and weighed only 20 grams, while the prototype held 14.25 grams on average but weighed 34.9 grams. Experimentation showed that balance was key, and removing unnecessary items like inflated balloons that added weight improved performance. Variables like materials and sizes were kept constant between designs. Based on research into scientific concepts like balance and center of gravity, no further changes would be made because the final design achieved the lowest possible center of gravity. The design process taught about the importance of balance and weight distribution for boat stability.
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Prototype information
- 2. Blueprint
- 3. Rationale In the blueprint for my prototype, I have a balloon typed to the inside of a plastic bowl. The balloon is then surrounded by aluminum foil (and around the outside of the bowl). On top of the balloon, there is a paper cup with tape running through the bottom of it all the way around the balloon. The plastic bowl is about 12.7 centimeters of a diameter across, and has a 7.6 centimeters diameter base. It is about 3.8 centimeters in height. The balloon has a circumference of 35 centimeters and the cup stands 5.7 centimeters tall. I decided to use the plastic bowl to support the balloon so it doesn’t become unbalanced as much when the weights are put on the boat. I decided to use the balloon because it has a small mass and a large surface area. This allows it to displace a volume of water equal to its mass very easily. This will let it float easily. I decided to use the aluminum foil so that the parts of the bowl that the balloon does not fill can be covered. This way, the boat won’t start filling with water as soon as it starts to sink a little bit. It will cover the whole outside of the bowl so that the water doesn’t come up under the edges of the aluminum foil and start filling the bowl that way. I chose to use a paper cup to have somewhere to put the weights. I put it on the center of the balloon so that it wouldn’t become unbalanced. I ran tape through the cup and around the balloon so that the cup won’t fall over as easily when filled with more weight. I taped the balloon to the inside of the plastic bowl so that it doesn’t move and
- 4. Data Table of Results Mass of Mas s the Boa t Hel d (g) the Boat (g) Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 Trial 7 Trial 8 Trial 9 Trial 10 Average 34.9 g 12.5 12.5 10 10 15 17.5 15 20 17.5 12.5 14.25 Qualitative Data The boat started tipping over before any mass was added because the cup unbalanced it (was too big for the size of the bowl). For most trials, after 5 pennies were added the boat began tipping farther and faster. It was noted that the more waterlogged the two sides of the boat became, (evenly) the less unbalanced the boat became.