Stanley,+Laura

This article was not what I expected. What information surprised me was not on what artificial blood was used for and how, but why the blood was used. I never knew that when blood is donated it only has a twenty-eight day shelf life, and even then it has to be properly kept refrigerated. This is really inconvenient because in most emergencies such as on a battlefield or in a car accident blood cannot be kept in such condition. Due to these facts I can see why there are tests being done on trying to find a search for artificial blood. Also it was interesting to find out that. I wonder if there are many circumstances in which blood is not used within the 28 days, it would seem like such a waste, but how do they circulate the blood that they give? Would they give the freshest blood that they have received or the older so that none is wasted. I feel like either way there seems to be a down side. This article was very interesting and brought up points in which I never knew occurred.

Laura, Good insights! Well written post. I suppose they try to get rid of the older stuff first? 5 stars. MW What surprised me from this article (MVP) was that the kilogram is the last of the SI base units that still defined by a physical artifact. I wonder about the other SI units that no longer have a physical artifact's story behind that. But, just the fact that the kilogram is the only SI base units that still defined by a physical artifact makes it even more of a reason to make sure that it is protected so that it is still in the far future. A second fact which I find interesting is that the prototypes are so valued. I figured that they wouldn't be that important for the fact that they are just copies yet these kilograms are still very well maintained to the best of the ability. A third fact that I found interesting is the exact number in measurement used such as 5.0184514 times 10 to the 25th power 12C atoms is equal to the mass of a kilogram the studies that went into finding this precise measurements had to have been a challenge. That number alone is just complicated to look at, but greatly shows how precise the SI must be and is to keep the kilogram the same. I do agree though that if alterations have to be made it could loose some interest on the original kilogram, but I still think it would be neat to see and keep the original kilogram.Laura,Yes it might be fun to go see the artifact in a museum. Well done! 5 stars! MW I think that the process of distillation is used in so much more than I realized. The process is very simple, but is used in big proportions such as the industry shown in the video. I find it very interesting that due to distillation we have many of the products that we have. The video shows when the crude oil is separated due to distillation it produces many important products such as what it takes to make plastic. I thought it was very interesting how this computer case was once crude oil. It is amazing that the crude oil makes the products that it does; I had never known that distillation could be used to separate mixtures in order to make a new product from this. I found this video surprising; it definitely had information that I had never heard of before. Laura,Well done. You found some interesting points! 5 stars. MW The article Motion Detectors was filled with information I had never known and found interesting. One new thing I had learned was that some motion detectors sense humans by the heat and temperature that we have. A second piece of new information that I had learned from this article is that the motion detector that bats have more known as the waves they give off to see also helps them detect poisonous from non-poisonous food. I find this very interesting for I had never known that there was a way to distinguish poisonous food with out previously knowing it was poisonous. A third new thing I had gained from this article was that the motion detectors that are set around homes only go off to humans, and don’t go off to any other motion such as a tree branch. I also knew about some of the information that was talked about through the article. One thing I had already known about motion detectors was that bats use them trough sending waves out in order to fly and know where they are going. A second thing that I knew mentioned in this article was that Rattle snakes can “see” there pray with the motion detector skill because they “see” the heat given off, and that they use this skill to find food. The last piece of information that I knew before reading this article was that Hertz is the unit for light frequency.

Laura, Looks good. Mo tion detectors are kind of annoying - they would really be a pain if tree branches set them off! Good post! 5 stars! MW

Elements form in space. Iron or less massive elements are created from protons and neutrons forming neutrons. The other elements are created during a supernova.

Laura, Well done - I might have said Elements form in stars but OK. 5 stars. MW

I like the way the paper starts off, "the source of the explosion: sugar". I never would have or could have guessed that sugar would cause an explosion that would lead to 13 death, and 40 injuries. I didn't realize that sugar would do such explosions because it is such a common house hold item. This question that I had was explained in the paper and showing the differences in the chemical mixes. I was surprised to know that this explosion was compared to a burning marshmallow. I found this article very interesting and how it shows how common items found in many houses could cause an explosion. Also explosion from coal, flour, plastic, metals, and even wood are common house hold items, and when they explode are referred to as dust explosions. I enjoyed learning how this process occurs due to a spark creating a shockwave. One fact that reminded me of a topic discussed in class was the product of energy when sugar is burned, which we did in class during a lab. I found in this article that sucrose is a product of burned caramel.Also the mention of combustion was referred to in this article state how it is a chemical reaction dealing with oxygen.

Laura, Good job! BTW it's marshmallow and caramel not march mellow and carmel. 5 stars! MW

After reading this article I would say that the most important point would be the description of how gas molecules exert pressure in all directions because of the continuous motion. This description follows everything that we have learned in any science class. Also, adding to reason why I chose this as my MVP was that it is the basic reason for buoyant force and explains where it comes from. Another point that was most interesting to me and reminded me of many situations is how pressure exerted by the atmosphere increases at lower levels of elevation. The obvious connection is how when driving up a high mountain such as Nittany Mt. ears “pop” because of the pressure difference. Another situation where ears “pop” due to different pressure levels is on an air plane. This led me to thinking about one other situation where this “pop” occurs, which is revolving doors when entering an indoor dome for a soccer game. There is most definitely a pressure difference, for the “pop” always caused a problem with everyone’s ears aching. These are just several situations that apply to this reading that came to mind while reading this section. A third point that was mentioned in this article that I thought was important was the ability to float is caused by the density of an object, if it is more dense than air, then it will not float the ability to float is caused by the density of an object, if it is more dense than air, then it will not float. This is a concept that I have learned also in previous science classes.

Laura, Another great post! You have a flair for writing! Well done! 5 stars. MW