Category Archives: Uncategorized

Thermos Challenge

Physics 11, Uncategorized

Prototype Testing Procedures:

     

Prototype Organizer #1:

      

Prototype Organizer #2:

      

Prototype Organizer #3:

     

Temperature vs Time Prototypes Graph:

Final Product:

Materials:

  • 1 glass jar (0.8W/m.k)
  • 1 plastic lid (0.03W/m.k)
  • 39.86 sq in of foam insulation (0.03W/m.k)
  • 1/6 sheet of paper (0.05W/m.k)
  • 4 dimes of glue (0.14W/m.k)
  • 2 googly eyes (0.03W/m.k)

Results:

Total cost = $3.00

Starting Temperature = 86.1°C

Final Temperature = 62.0°C

Change in Temperature = -24.1°C

Explanation and Justification:

The materials and ideas used to create this thermos were thoughtfully chosen. First off, we had to take into consideration thermal energy, this being the idea of a total amount of molecules in a specific amount of material and how these molecules interact. The faster the mocleules either vibrate, rotate, or translate the more friction there will be which results in more thermal enegery allowing there to be a higher temperature because of the average movement of kinetic energy of molecules. Therefore, with this idea in mind we worked together to find materials with a low thermal conductivity to be able to maintain this kinetic energy in the thermos. We decided to use foam insulation as our primary defense against heat loss as it has a low thermal conductivity of 0.03W/m.k – the lower the thermal conductivity the better it is as an insulator. As a result the foam was able to insulate the glass jar which also had a relatively small thermal conductivity of 0.8W/m.k. With both products and the plastic lid (0.03W/m.k- thermal conductivity) we were able to insulate the water and keep it’s heat. After learning from our first prototype we knew we needed to cover the top and bottom of the thermos due to conduction, convection, and radiation. As we do not want to lose heat, choosing to add insulation to the bottom of the glass jar elimated direct contact to a possibly colder surface which helped minimize heat loss. In addition, cold air/water is more dense meaning it would be at the bottom of the jar which is why we insultated the bottom even more to keep this needed heat inside. Also, by adding foam insulation to the top, we were eliminating further heat loss of the water’s heat through convection, since hot air/water is less dense allwoing it to rise. On the other hand, we weren’t able to minimize additionnal heat loss due to radiation because our budget would not allow it; however, if it had been possible, we would have added a refelctive layer on the inside so the heat wouldn’t have been able to radiate out as easily. While conducting our final experiment with the thermos we also took into account the law of conservation of energy. With this in mind we decided to warm up our thermos ahead of time to ensure we minimized as much heat loss as possible, as heat travels from hot to cold showing that the boiling water’s heat could travel to the cold jar’s “heat”. Furthermore, before measuring the temperature final temperature of our thermos, we quickly warmed up the thermometer so that the thermometer wouldn’t cause us to lose a lot of heat as the water’s heat would travel to the thermometer. Overall, we worked to create a “vaccum” to seal in heat by using various products and techniques that would minimize heat loss while also creating an appealing, adorable appearance of a bear. In the end, our thermos accomplshed it’s goal, and was a success because multiple aspects were considered throughout the design process and execution.

Human Condition – Dove Legacy

English 10, Uncategorized

 

In the video Dove Legacy, produced by Dove US, a group of women were asked how they felt about their bodies. They were told to make a list of all the different things that they disliked and liked about their bodies. They each pointed out their flaws, naming more things that they didn’t like about themselves than things that they loved. They each had different parts of their bodies that they wished they could change, some their nose or eyes and others their arms or thighs. They also asked their daughters the same question. The young girls also made a list and were then asked to compare it to their mother’s. The reactions of their mothers showed how unaware, surprised and disappointed they were to see how similar their lists were. The women hadn’t realized how much their daughters had picked up on and that how they felt about themselves reflected how their daughters also felt about their bodies. At such a young age these girls look up to their mothers and if they are taught that how they look isn’t beautiful than they will believe that. Humans typically focus on their personal flaws which can negatively impact their self-perception and the way their children and others see themselves as well. This video shows how humans negative self-image affects subsequent generations and that the perception of self-beauty, that should be positive.

I’m Disconnecting – Mini Inquiry Project

English 9, Uncategorized

 

I’m Disconnecting

Living in a world without technology,

Can you imagine how it would be?

 

Would we see the world the way our parents remember,

Or from our devices is it too hard to dismember?

 

We’ve been contemplating our electronic navels for too long.

And even my childhood was taken where it doesn’t belong.

 

We have become slaves to the technology that surrounds us.

This technology lets us in silence, discuss.

 

Like cyborgs we have a machine attached, always on.

We have become a generation of smartphones and more ons.

 

We pretend not to notice the social isolation,

It’s captivated, controlled, confounded our nation.

 

Perhaps if we stopped, put down our phones and looked around,

We would be able to see the loss profound.

 

So, I will no longer be so accepting,

Just as soon as I text them that I’m disconnecting.

 

 

“I’m Disconnecting,” by Shaylyn Gordon is the perfect example of the technology based world that we live in. She captured the perfect amount of irony and put it all together in a swift rhyming couplet poem. She added the downsides of technology into her poem and represented how society has responded. Gordon included similes, alterations and irony, which all beautifully compliment her literary allusion to The Veldt. The line “We’ve been contemplating our electronic navels for too long,” is a quote taken from The Veldt that fits in wonderfully with her theme. Gordon simply states the shame that our generation should have for making technology such a necessity, but makes it easy to comprehend from the point of view of a 21st century child. The question “Why do we only focus on the tangible or the material in our culture?” directly connects to Gordon’s poem, because she also questions a lot of our tech-lifestyle choices. Technology is going to continue to grow more and more as the year’s progress. Shaylyn Gordon has sent an eternal message to our ever-growing electronical world, and it is safe to assume that her passion may help us conquer the world’s technology indulgent.