Archive of ‘Science’ category

Heat Transfer unit Reflection

Explain the problem you were trying to solve: 

Climate change is happening so as the ice is melting in Antartica. Penguins have less place to live and even 100 penguins all standing in a 5m-by-5m ice platform. We are trying to design and build a penguin house that reduce heat transfer.

Explain the reason for your design and redesign 

I found which material could reflect the most heat and used it as the box to reduce heat transfer. After trying it one time, I added another layer that worked best in the line and added it to the first layer. 

Write an explanation about which design worked better, using the data you collected as evidence. 

The second design worked better because it gains 0.42g less. How many layers you add can affect the result. 

How has your understanding of the transfer of heat energy and temperature changed during the penguin project?  

I didn’t really understand it at first, but throughout the process I knew more and more. Until now, I sometimes still mess up conduction and convection. We didn’t talk a lot with temperature and kinetic energy, so my understanding is still very weak. 

Trap Heat Insulator

Cup Challenge

The problem we are dealing with is to trap the heat in a cup for as long as possible. Drinks would be cooled off fast that we can’t drink it in the perfect timing. The first thing we could do is putting a cup to trap the heat from coming outside from the top. We also need to warm the cup so we need to cover the cup with a layer. What I did first was putting my idea down and drawing the model of my project.

Putting a top on the cup is a great way to trap heat. When heat whets up, there is a top to trap it from going out that makes it fall down that traps the heat. For example, if you put hot water in a cup with no top; it would drop 20.9 degrees. If you put a top and side wrap around; it would only drop 8.8 degrees. The one with a top is almost 2.5 times better than the one with no top.

  • Improve on:
  • find better material to trap heat in stead of a cardboard cap.
  • test it several time
  • make the outside look better
  • Work well:
  • The change of the temperature wasn’t very big
  • made the outside look kinda nice