The 44th President of The United States of America: Barack Obama

Just yesterday, Barack Obama was sworn in as the 44th President of The United States of America. This was a historic moment because Barack Obama is the first African-American president. Luckily, I was able to watch the Inauguration at school and see President Obama get sworn in. As I was researching the topic, I came upon two articles that explained the Inauguration in a great way.

The first article I read was written by the New York Times. It talked about the millions of people who joined the President and his family from the capitol to the National Mall and beyond. His many supporters started chants saying, "Obama! Obama! Obama!" The article also discussed how Barack and Michelle Obama had to attend 10 Inaugural Balls that evening. It was already a long day and President Obama had to continue it to the wee hours in the morning. I believe that Barack Obama is a great man. He is respectful, intelligent, and funny, some of the many things we need in a president. When interviewed at one of the Inaugural Balls he was quoted for saying, “Hit it, band!” That shows that he has a sense of humor. You can find the article at http://www.nytimes.com/2009/01/21/us/politics/21obama.html?_r=1&ref=us.

The second article I read was about the many people who traveled hundreds of miles to witness history. Avil Lawrence and Lou Johnson went with their children to witness the amazing moment. Lou Johnson's son is 40 and said "'To be honest Dad I never thought I'd see it.' So, here we are able to see it together." Avil Lawrence was apart of one of the first segregated classes in 1971 and was proud to witness Barack Obama become president. The article makes me understand how others feel about this moment in history. I think that it is a big step for all Americans to start new, especially at this time. The people who were apart of the celebration might not have been able to see the actual swearing in, but they were happy to be apart of the event. You can find this article at http://www.nola.com/inauguration/index.ssf/2009/01/streaming_north_witnesses_to_h.html.

Overall, I thought the Inauguration was a historical moment that will forever be remembered by our generation as well as the many generations after us. I am happy to say that I was watching and able to be alive for this amazing time.

(I got the picture of Barack Obama from: http://www.sciencedebate2008.com/www/assets/images/barack-obama-1.jpg

A Twisterssssss's Spin

Recently, two meteorologists at the University of Oklahoma, Nathan Snook and Ming Xue, have ran a series of simulations to study how tornadoes get their spin. First of all, tornadoes are caused by hot, humid weather in a cold clouded area. The men tested many different types of precipitation to see what could help cause a tornado's spin. Including, small hailstones, large hailstones, small raindrops, large raindrops, small hailstones and raindrops, and large hailstones and raindrops. They concluded that the size of the precipitation is a part that makes the tornado spin. When there is a small droplet of water, it is easier to evaporate, causing the rain or hail to fall to the Earth. This is also because smaller amounts of precipitation cool the air, eliminating the hot, humid air that causes a tornado. Larger droplets resist evaporation and do not cool the air during the storm, creating low pressure and starting the sucking force in the air. This force spins the air and creates the spin of a tornado. I think this is a cool topic to learn about and study because you can always witness weather and its everywhere around you. It is also cool because I never knew that something actually caused the tornado to spin, I thought it was only because that was what a tornado was. This is just another step to finding ways to prevent the damage tornadoes around the world have put onto lives and many peoples homes.

I got my information from: http://sciencenow.sciencemag.org/cgi/content/full/2009/105/2
and the picture from: http://www.billspringer.com/share/tornado/mb-tornado-01.gif

Transverse and Longitudinal Waves

(a) is an example of a longitudinal wave and (b) is an example of a transverse wave.

This month during Science class we have been learning about transverse and longitudinal Waves. Transverse waves are waves that moves the medium at right angles to the direction in which the waves travel. Longitudinal waves are waves that moves the medium parallel to the direction in which the waves travel. Both of these waves have similar characteristics. They both have a crest, which is the high part of a wave, and a trough, which is the low part of a wave. The wave is measured by its amplitude, frequency, wavelength, and speed. In class we did many activities that correspond with waves. Such as using a slinky. When you push the slinky on one side, you can see the wave traveling through to the other side. When we were diagramming transverse waves we used a spring rope. With a partner holding the other side, we moved our hand up and down. Starting slowly, we noticed that it looked like a wave in the ocean. As we speed up, the waves became smaller and they would pass a point more frequently. I learned a lot about waves in the past weeks but when I searched transverse and longitudinal waves, I learned something new. I learned that water waves travel in a clockwise cycle. I also learned about a Rayleigh surface wave. These water waves move in a counter-clockwise cycle but deeper in the wave, it turns into a clockwise motion.

http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html
http://sol.sci.uop.edu/~jfalward/physics17/chapter10/slinky.jpg(picture)