Plasticity Lab

Recently we did a science lab on the property of plasticity. Plasticity is a property that the mantle of the earth has. When immense heat and pressure act on the mantle, it acts like a solid. However, as if the heat and pressure decrease, the mantle would then act like a liquid. For the lab, we made a substance that also had the same property of plasticity. We did this by mixing 5 teaspoons of cornstarch with 20 milliliters of water. Then we grabbed a handful of the mixture and squeezed it. When we squeezed it, the pressure we applied made the mixture condense and act like a solid. However, as soon as we let go it went back to acting like a liquid. I found this lab very fun ( although a bit messy) and very educational.

October Sky

Recently in class we have watched a movie called October Sky. In the movie, a boy named Homer is inspired by the recent launching of Sputnik, the first man-made satellite. He decides to build his own rocket, and enlists the help of several of his friends. Together, they test many different designs for the rocket before they finally make a successful one. Then, with the help of their teacher, Miss Riley, they enter into a science fair and win first prize, leading to national attention and an insane amount of scholarships. This movie connects to science and math in many ways. Rockets connect to the movie because that's what Homer and his friends decided to make. Coal mines connect to the movie because the town that Homer's family lives in is owned by a coal mine, and his father is a worker there. Science fairs connect to the movie because Homer and his friends enter their rocket design into one, and end up winning first prize and tons of scholarships. Sputnik and the Russians connect to the movie because Sputnik was what inspired Homer to build a rocket in the first place. Proving their innocence using math connected to the movie because Homer used his knowledge of mathematics to prove that he and his friends did not start the forest fire, and could therefore continue their rocket building venture. Health dangers connect to the movie because Homer's father's life was later claimed by Black Lung Disease, a disease that often affects workers at coal mines due to the conditions there. Many Character Education traits were also shown in this movie. Homer and his friends had to show cooperation in order to work together and finally design a successful rocket. Homer had to show assertion when his father tried to bring Homer's rocket building efforts to a halt. He convinced his father that the rocket building would not harm the coal mine in any way, and even moved his testing site to an area several miles away from the coal mine to make sure of that. Even though Homer's father did not always approve of the rocket project, Homer still showed respect toward him and called him his "real hero". Homer showed empathy for the Russian worker that helped him build his first rocket when the Russian worker died in the coal mine. Before, he had worked in the shop, but Homer's father switched him into the coal mine. The Russian was given the offer to go back to the shop, but decided to stay in the coal mine because he received better pay. All in all, this movie had many connections to science and math, as well as character education.

Duchene Muscular Dystrophy

Duchene Muscular Dystrophy is a genetic disease that causes weakness and wasting in the muscles of people with the disease. Most people with the disease die before they reach their thirties. I feel very sad for the people with this disease. I think more work should be done to find a cure for this disease. Otherwise, many more people will suffer from the symptoms of the disease.

Color Blindness

Color blindness is a genetic disorder that causes people to not see as many shades of colors as usual. Inherited color vision deficiency cannot be treated, but if the color vision problems are caused by a broken cataract, the damaged cataract can be removed. This disease is unable to kill anyone. About 1/212 people in the United States exhibit the symptoms of color deficiency. Males are more vulnerable to the disease, because the disease is carried in the X chromosome. Males only have one X chromosome, while females have two. So if the disease is present in the X chromosome of the male, they automatically have color deficiency. However, for the female the disease must be present in both chromosomes, or else she will not have color deficiency. Even though it cannot kill people, i still feel sympathy for the people who have the worst form of this disease, where they can only see different shades of black and white. As noted above, color deficiency is a very intriguing disease.

Sources: www.webmd.com
www.webexhibits.org

Rollercoaster Website URL

URL:http://rickardodo.webs.com/

Warding off Birds at the Airport

You may have heard of the flock of birds that flew into US Airways Flight 1549, forcing the pilot to make an emergency landing in the Hudson River. Steve Osmek's job at Seattle Tacoma International Airport is to prevent a disaster like this from happening again. The airport has been trying to do this since the 1970s. They have many methods of to prevent birds from landing at the airport and ward them off. To prevent the birds from landing in the first place, they try to cover up the environments that attract the birds. To make them go away, on the other hand, they fire explosive shells in the air pistols of shotguns. He also has a laser that when shined at a bird, supposedly mimics a predator stalking it and forces it to take flight. Finally, he has a radar to help him spot birds with greater ease. I think that this is a very effective way to ward off birds and prevent them from causing harm. I also think that it is great that other airports are also getting radars to help them deal with their "bird problem". All in all, I think that these are great ways to prevent an accident like US Airways Flight 1549 from occurring again.

Source: http://www.cnn.com/2009/TECH/science/02/11/seattle.bird.radar/index.html#cnnSTCText

North Korean Missles Now Capable of Hitting the U.S.

According to the South Korean Defense Ministry, North Korea has recently spent a great deal of money improving it's land and sea forces, as well its weapons. The is no word yet on why they are doing this, but because they have recently thrown out their peace agreements with South Korea, they appear to be preparing for an oncoming war. One weapon they decided to improve is the medium-range ballistic missile. It is now capable of flying about 1,900 miles which may put U.S. bases in Guam in their range. They also improved their long-range missile, the Taepodong-2, which is believed to have a range of 4,200 miles, which puts even Hawaii and Alaska at risk. I think that this is a very serious issue that needs to be dealt with immediately. These missiles should be unarmed right now with no questions asked. I can't believe anyone let their weapons advance this far in the first place.\

Source:http://www.cnn.com/2009/WORLD/asiapcf/02/23/northkorea.missiles/index.html