Sunday, April 18, 2010

What Happens When Air is Heated?


When we put the aluminum spiral over the hot plate, it spun. I think this is because when air is heated, it rises. So when the hot air rose and touched the top of the aluminum spiral, it came back down it. This is because aluminum is a conductor of heat. So when the heat touched the top of the spiral it had a domino effect and the heat came down the spiral. Simultaneously, another heat wave is coming up to the top of the spiral while heat is going down it. Because there is constant heat going in the same direction, the spiral was spinning. If the heat stopped, it would stop spinning. It is all because heat rises.
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Can Collapsing Lab


The water in the can boiled because of the increase in heat. The aluminum can also heat up along with the water inside it, because aluminum is a conductor of heat. During the experiment the water took a while to boil. This is because the atoms took some time to start moving faster. Once the water vapor was coming out of the can we could tell it was boiling. So, when we put the can with the water inside it into ice water, the can collapsed. This is because the bouncing atoms hit instant cool. When the hot can suddenly hit ice cold water it collapsed. This is also because of air pressure. When the water was heated, the air pressure in the can was less than the air pressure outside the can, causing it to be unbalanced. The air pressure on the outside was pushing on the can. So when the molecules hit cold water they escaped from the can into the water. The air pressure outside the can pushed with a sudden force causing the can to collapse.
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Why does Popcorn Pop?


The radiation from the microwave helps the popcorn kernels pop because it gives off heat. Inside a kernel there is a little drop of water surrounded by starch and on the outside there is a hard shell. When put in the microwave or any source of heat warming it, the little drop of water turns into water vapor within the kernel. When the water vapor cannot stand to be in the confined space anymore and there is too much pressure, the kernel explodes, making popcorn. The water vapor escapes and that is why there is steam coming out of the bag when you open it.


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Wednesday, April 7, 2010

Article connects to Science


Recently, a marine’s wife gave birth to a premature child. This marine was overseas during the birth and wished to go home on emergency leave to see his sick daughter. Unfortunately, he was denied this privilege and his wife was devastated. The doctor taking care of their daughter insisted that his unit commander give this marine an emergency leave to come see his daughter, because she was extremely sick. But soon enough due to modern science, the marine was told that his child was doing better. The marine must now get special permission to go on a leave, and I personally, I hope he can.
This story along with every other story has some relation to science. In this case, a connection to science is that since the daughter of the marine was born prematurely, she was put into intensive care. This is when the doctors have individual care for the patients and give them special medicines as well as equipment to care for their personal needs while they mature. These medicines and the equipment to care for these babies are science for the reason that people use facts and principles, the basis of science, to create them.
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TV show connecting to science


One of my favorite TV shows is House. It is about a doctor, Gregory House, and his team trying to help patients. Dr. House is a very unusual character because he does not like communicating with the patients, is very stubborn, and acts like he hates people and hates all his patients. He also has a mood to him that makes him seem like he does not care if the patient gets better or not. This show takes place in the Princeton-Plainsboro Hospital. This show connects to science in many ways. First of all, Dr. House and his team use medicines to cure or treat the diseases and infections. The medicines are made by different kinds of scientists. Also, on House, they use different medicines to calm heart rates and stabilize the patient’s body. Another way this show connects to science is that the team and other doctors on the show use machines and instruments developed to find out what is wrong with a patient. They are also used to enhance to knowledge of science, created by researchers, doctors, and scientists. An additional way House connects to science is that Dr. House has a crippled leg. He takes patients’ unused morphine pills and uses it to stop his leg from paining. Morphine is a pain-reliever that can be dangerous if overdosed. House takes the chance of dying due to a morphine overdose. This relates to science because Morphine is a pharmaceutical drug created with certain chemicals. All in all the show House is a very intense show that is directly and indirectly related to science.
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Tuesday, March 23, 2010

Impact of Deforestation


We all know that deforestation is horrible. One of its consequences is Global Warming, something that affects the world as a whole. Not only is one of the problems of deforestation global warming, but it is killing numerous plants and animals as well. Apparently, in the Amazon this isn’t all that’s getting destroyed. There are many unknown species of bacteria lurking within the Amazon, say Eric Triplett and James Borneman from the Agronomy Department of the University of Wisconsin, Madison. They took soil samples from a full-grown rainforest and compared it to a pastureland created by deforestation that was right next to the rainforest. Once the soils were sampled, they took out the bacterial DNA. Comparing the two soils and the DNA in it, they recognized 100 diverse DNA sequences, none of them being duplicates. There were 18% of the sequences that could not be categorized into any known bacterial kingdom. Dr. Triplett said, "The microbial diversity found in the mature forest and pasture soils from eastern Amazonia is immense." There is a phenomenal difference between the two soil samples. He also enforces the fact that even with all the work that is being done to save the Amazon, there needs to be more. Basically, there really shouldn’t be such a huge difference in the soils of neighboring lands. One underwent deforestation while other did not. There have been endless studies of the fresh water, animal species, and plants living in the Amazon. But very few studies have been done on the soil and the microbial populations living within it. Triplett also talks about why he and Borneman did the research in the first place. He says, "It's such a rich biological resource that we decided to go and study it. In the discovery of new organisms we can find previously unknown enzymes that can help further the progress of biotechnology. In addition, there are bacteria out there producing antibiotics that we have yet to discover.” What he is trying to say is that the reason scientists and researchers should examine and compare soils, and identify the micro-populations within the soils is to help the process of sciences. To contact Dr. Triplett for more questions click here.

Personally, I agree with Dr. Triplett. Seeing what he has accomplished, and what he found, scientists and researchers should study this topic more in depth. They should take into consideration the information and realize that a rainforest is more than just animals and plants. They are about discovery and facing the unknown. Dr. Triplett is trying to tell the world that if you study this topic, small things can be discovered like locating a new bacteria, as well as big things like creating a new antibiotic, something that can treat and maybe cure diseases and infections. Deforestation is taking that away. In an indirect way he is telling us to “Go Green” and protects the earth and the nutrients it provides us with.


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Saturday, February 27, 2010

The "Snowacane" of 2010




The snowstorm that kept many schools in New Jersey, New York, Pennsylvania, Connecticut, New Hampshire, Maine, and Washington D.C. closed on February 26, 2010 is being called a snowacane. This is in reference to a snow storm and a hurricane. Many are saying that it is caused by El Niño because the storms are coming from the Pacific this year. The National Oceanic and Atmosphere Administration also know as the NOAA, says that “El Niño is a disruption of the ocean-atmosphere system in the tropical Pacific having important consequences for weather and climate around the globe.” It has unusually high water temperatures in the Pacific. This is what is causing the constant snow storms in 2010, because this is an El Niño year. Basically what happens is that when the warmer waters in the Pacific evaporate, the water vapor from the evaporation is very warm. So, when it condenses the warm water vapor coming down meets the cool air making snow. The winds of El Niño push towards the United States, as well as other countries, causing massive snow storms. The warm gas from the El Niño oceans in the Pacific meets the cold, winter air of the eastern United States and a larger amount of precipitation occurs. As the air gets cooler, snow takes the place of the rain and just like a large rainfall; there is a snowstorm or a blizzard. Global warming is making these effects more severe.

The scientific name for a hurricane is a tropical cyclone. To create a tropical cyclone, it needs first warm ocean water and secondly needs wind. NASA says that “Meteorologists have divided the development of a tropical cyclone into four stages: Tropical disturbance, tropical depression, tropical storm, and full-fledged tropical cyclone.” First, a tropical disturbance is mainly when water vapor from a warm ocean forms a huddle of thunderstorm clouds. Second is a tropical depression. As the thunderstorm of the tropical disturbance grow bigger and higher, the air on the top is cooling and becoming unstable. The air pressure grows higher, causing more winds to move away from the air pressure area. The movement causes the pressure at the surface to drop, creating more thunderstorms. When the winds of the thunderstorm reach a certain point it is called a tropical depression. Next is a tropical storm which is essentially just the when the wind speeds up from the tropical depression it becomes a tropical storm. Finally is the tropical cyclone. When the winds speed up even higher, the storm is legitimately a tropical cyclone. The trade winds, which are winds the blow from east to west, push the cyclone toward the Caribbean, the Gulf of Mexico, or the southeastern coast of the United States. The cyclone is usually the most powerful when still in the water, but close to land. When the monster reaches land, it calms down slowly, the dies out while still dumping quite a bit of rain on the land. This has a major affect on the people living in the areas where the hurricane hits, of course. It caused many power lines to drop and floods were also a huge problem. People were left without electricity in a town full of water and snow.

As you can see, there are many similarities in the formation of the hurricane and the El Niño snowstorm. They both form from warm waters evaporating and condensing, forming storms, in this case, a snow storm. Also, the winds from this snowstorm and a typical hurricane were very similar. Thus, the name snowacane was given; it was a combination of a hurricane and a snowstorm.
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