Probing Earth's Core

http://www.sciencedaily.com/releases/2010/04/100428110810.htm

This article was about scientists using earthquake methods to try and discover more components of the Earth's core, our magnetic field, and how our planet forms. As most of us know, Earth's core is made of iron, nickel, and lighter elements such as silicon, sulfur, carbon, and possibly oxygen. Students of University of Calgary issued a seismic wave speed to determine materials at the top of Earth's core. The students said that observations of earthquakes is one of the few tools that they use, but the research method is probably one of the most definitive. The method they use is similar to hearing a conversation in an empty church. Using a digital proccessing approach, they were able to analize faint signals that were produced by fourty-four earthquakes, and were able to measure the sound speed of the top of Earth's core with immaculate accuracy.

When I saw the article title, I thought it would be pretty detailed, but I was disappointed in it, since it didn't really cover that much. It wasn't boring, but it wasn't exciting. I was kind of excited at the fact that using this method of research, we'll be able to find out more of our magnetic field and the inside of our core, and maybe from that we'll be able to find out more about prehistoric life as well. I wish the article was a little bit more informative, so we'd be able to know more of what went on, and how they performed the tests. I'd also like to know what kind of results came from the tests, and then see what things make up our Earth's core.