Using a series of very technical tests, scientists from the French research facility CEA have determined that the Earth's core is roughly 6,000 degrees Celsius. That is approximately 1,000 degrees hotter than the temperature obtained by tests in the 1990s.
These new figures show that the center of the Earth is just as hot as the surface of the sun.
The experiment that supplied the new temperature used X-rays to probe tiny samples of iron at extraordinary pressures to examine how the iron crystals form and melt. The BBC reported that "To replicate the enormous pressures at the core boundary - more than a million times the pressure at sea level - they used a device called a diamond anvil cell - essentially a tiny sample held between the points of two precision-machined synthetic diamonds.
Once the team's iron samples were subjected to the high pressures and high temperatures using a laser, the scientists used X-ray beams to carry out "diffraction" - bouncing X-rays off of the nuclei of the iron atoms and watching how the pattern changed as the iron changed from solid to liquid."
Today was day 2 for my first graders. Today I introduced an anchor chart (formerly known as thinking maps). I prefer the term anchor charts because I create them with my students and post for the students to refer to. The charts are created for the sole purpose of "anchoring" their thinking. Anchor charts can be created and used for any subject.
Today we completed two charts. The first chart, we compared kindergartners and first graders. I helped the students brain-storm the...
Are your students bored? Then let them make a board. A game board that is.
As a teacher of gifted students, I am always amazed at how my classes have loved creating game boards as assignments. They become immersed in creating a theme, crafting game pieces, coming up with clever questionsthen the fun part, they get to play each others games.
Personally, I love using the game board lesson because it can be applied to almost any subject. If students are studying natural disasters,...
This guest blog post was made by EducationWorld Web Assistant Joseph Murphy, a student at Furman University in Greenville, SC.
Students in the 21st century live and breathe technology. Cell phones are fused to their hands, ear buds are glued in their ears, and any kid can find the answer to a question in .5 seconds through the Web. With technology...
Employment Web site CareerBliss recently ranked the happiest and unhappiest jobs in America and, according to their methodology, teachers are the third unhappiest professionals in the country.
Teachers fall behind only security officers and registered nurses on the list. The CareerBliss data evaluated the key factors which affect work happiness, including: work-life balance, one's...
As a teacher, do you want to have tunnel vision? Do you want to be locked into one way of doing things? Do you want to stop growing and building upon your prior experience?
Ok, then I have some advice for you:
Stay in your classroom. Thats right. Dont venture out into the world of education, where you can pick up techniques, lessons and philosophies that can greatly enhance your instruction. Stay cooped up in your room and just keep chugging along, without knowing that...
September 22 is Elephant Appreciation Day. Did you know that elephants can be right or left tusked, kind of like humans are with their hands? Did you know that the elephant has the largest brain of the animal world?Learn more interesting facts about the elephant with this fun and informative webquest. I have also listed several extension activities. Hope you find the activity of value with your students.
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Changing jobs can be stressful. Lets face it. No matter what you know from the previous job, you will always face a learning curve when entering a new position.
I am facing that learning curve as we speak, as I have recently accepted a new position teaching gifted students at a school in Tampa, which also happens to be in a different school district.
The situation has inspired me to brainstorm creative, calm ways to make your transition from one teaching job to another smoother...

This guest blog post was made by EducationWorld Web Assistant Joseph Murphy, a student at Furman University in Greenville, SC.
In the first four days of its release, Apple sold more than three million copies of the new operating system...
Reputations are like shadows. They follow you everywhere!
We often tell our students that their reputation is important, and that it will follow them to the next grade. But how often do we think about our own reputation?
If there is one thing that I have learned, it's that the goodwill we build as educators can make or break our career. In the past five years, I have changed teaching jobs twice. Both times I received a job offer based on the recommendation of my previous...