Thursday, May 29, 2008

class response blog


Why and how do kites fly? this is a popular question asked by people that don't know much about kites. I will answer that ever so popular question. Kites fly because of weight, drag, wind speed, wind direction and air pressure. When a kite is heavier then air it relies on a rounded surface on the kite that deflects the airflow to create different air pressures. Also, when the wind is moving faster towards the kite the air pressure decreases and creates lift. When the wind is going slow it creates an increased air pressure which decreases lift. Another huge factor of kites flying is drag. Drag is really determined on the design and the set of the bridle line of the kite, and is when gravity pulls down of the kite. One shouldn't have too much drag though, the kite should have more lift then drag to be able to fly well. But, the kite should have drag to gain stability. So basically a perfect kite needs an unbalanced 60:40 ratio of lift to drag. Overall, a kite flys because of weight, drag, wind speed, wind direction, and that ever so important air pressure!

class response blog


Reservoirs are main water supplies for drinking water, bathing water etc. A reservoir is an amount of water that is held between gaps from rocks in the earth, forming pockets. But, they are very limited because of humans. Humans take way to much advantage of these wonderful springs and eventually we will not have water in them. We use these water resources for drinking, bathing, farming and factories and waste a great deal of it. This isn't the only problem humans are causing, we are causing a great deal of a thing called, water pollution. Water pollution is when humans put waste, chemicals, and other non biodegradable substances into the earths water sources. This is a very bad thing because clouds take water from water sources, and reservoirs are sources of water. Also, The clouds move to other areas, so they take the polluted water and spread it to other masses of water. Basically, although we are only polluting one source we are pretty much polluting every water source their is. Not only that, but the animals drink from the water that we pollute, and get sick and die eventually. The ones that don't die we eat so we are sickening our selves by eating the sick animals. Worst of all, the animals are dying and there will be more endangered and extinct animals,which is really messing up the food chain, one of which humans are a part of. Overall, if humans do not stop polluting the reservoirs we will be killing our selves, and the world as we know it will be destroyed!

Monday, March 10, 2008

Math News Blog


Everyone wants to go, to where they want go, fast right? That’s why people walk a straight line in lieu of zigzags. A straight line may be the shortest distance between two points, but it isn't necessarily the fastest path to follow. That's true when terrain is not level, and now researchers have created a mathematical model showing that a zigzag line provides the easiest way for people to go up or down slopes. So the next time you want to go to a place fast, think twice before walking a straight line!

Math News blog


A math problem which has overcome mathematicians for almost 140 years has been solved. It was solved by a researcher at Imperial College. Darren Crowdy, has made the discovery in an area of math called conformal mapping. Conformal Mapping is a theoretical tool used by mathematicians and scientists to translate info from a confusing shape to easier circular shape so that it can be easily studied. Now that this extremely hard math problem has successfully been solved mathematicians can stop worrying.

Wednesday, March 5, 2008

current event blog

When you think of The Grand Canyon you think of a huge dry waterless gap in the earth, am i right? Well not anymore, on Wednesday a whopping 300,000 gallons of water per second was released into the Grand Canyon from Lake Powell. At this rate, that would be enough water to fill the entire empire state building in as little as 20 minutes! This is going on for three days in hope to restore plant and aquatic animal life in the Grand Canyon and restore beaches. Although the water will only rise a few feet after the process, researchers are hoping that will help restore sand bars in the Colorado river downstream of the dam. Over all, flooding the canyon will increase wildlife, restore beaches and possibly help endangered species reproduce more offspring.

Tuesday, January 15, 2008

science blog

Everybody likes ice cream! No i take that back everyone loves ice cream! But would you love ice cream if you knew they put antifreeze in it? Yes it is true, scientists in Wisconsin have discovered a way to put antifreeze in ice cream and make it edible. This may sound gross, but really there is nothing gross about it, it has proven itself useful to prevent ice crystal growth a.k.a freezer burn. It is a completely safe chemical if used right and you shouldn't think twice before eating ice cream, it will do nothing more then keep the ice cream freezer burn free!

Wednesday, December 19, 2007

current event blog

The sea-dwelling creature known as the whale may have evolved from a land animal. The creatures name is Indohyus, and from fossils, scientists have learned that it has similarities to water dwelling cetaceans. It is said to resemble a long-tailed deer without antlers. The 48 billion year old animal is said to be the ancestor of the whale. Though this creature is fairly small, researchers explain that it's certain shape of molars connect it to the earliest whales. The biggest connection researchers found was that it's thickened ear bone, which is only seen in cetaceans. Also, the teeth of the land-dwelling creature showed that it spent time in the water and possibly searched for food under water. I believe this scientific connection is true because of the creatures whale like features yet research is still needed and is in place at the moment.