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."
Greetings~
With the New Year in mind~ I wanted to get you thinking about some resolutions for the remainder of the school year--but with a twist. I want to suggest some "out of the box" resolutions that you may not normally consider but that could havea positive impacton those around you. Enjoy and feel free to list your own resolutions by visiting http://community.educationworld...
With the Consumer Electronics Show quickly approaching, many tech firms are beginning to leak information about big product unveilings that will take place at the trade show. While most of the leaks are for typical products like tablets and notebooks, Samsung has industry watchers scratching their heads with the release of an image of a purported new television set. The...
Careers....what will I be when I grow up? I think young people start at an early age starting to look at different career choices. I've posted many interviews with people sharing their career choice. Perhaps~ you will find these of value to use with your students. Young people need to ask themselves...Do I like math~ science~ computers? Do I like to write~ be in charge~ work with my hands? Do I like to be given directions~ work with children? Do I like to sell things~travel~ or work at home...
I was ready to quit on this kid. I know~ as teachers we are supposed to reach every child~ educate them all~ inspire them all to greatness.
But I think this student hated meat least when we first met.
She is a fifth-grader in the schools gifted program~ which I took over this summer when I accepted a new position and relocated to a new school system. From the start~ we butted heads. I began teaching the gifted group using a math program~ called the Stock Market Game. Most...
Young people need to know about the world in which they live. Here are some activities to use with your students to encourage geography awareness? Perhaps~ you will find these of value to use with your students.
Gail Hennessey
1. My students enjoyed doing this short map safaris to solve a secret message:
SECRET MESSAGE:
Find the answer to the following geographic puzzler. Then~ place the first letter of the word in the proper space below to solve the...
In a move that sent ripples across the Internet, photo-sharing Web site Instagram attempted to adjust its privacy policy to claim ownership of all images publicly uploaded by its users.
After public outcry over the policy shift, Instagram reversed its course and ceased actively seeking...
So often~ young people today worship rock stars and athletes~ and the mainstream media creates heroes out of people who sing well or are born into royalty.
While some of these stars have admirable qualities and their accomplishments noteworthy~ the true heroes of the world~ in my opinion~ are people like those caught in the horrendous events at Sandy Hook Elementary in Connecticut~ where 26 people lost their lives.
Teachers~ like Victoria Soto~ and principals~ like Dawn...
By Dr. Jason Creekmore~ principal of McCreary County Middle School and member of the Kentucky Association of School Administrators
The wide-ranging concept of leadership is one of the most studied topics in all of academia; however~ the more specific issue of educational leadership has gained attention in recent years due to the increased expectations of public schools to improve student achievement. Serving as school principal can be truly fulfilling. Indeed~ there are few positions...
In my experience~ parents can be your best friend or your worst enemy.
As a teacher~ it really comes down to how you deal with them~ particularly in how you communicate with them and respond when they have questions or concerns.
I never understood when colleagues created an us against them type of situation with parents. Dont get me wrong. Ive had those parents that make you want to quit the profession. You know the ones that drive you up the wall~ expecting miracles and...
Need a fun activity for before the holiday? I wrote a new To Tell the Truth Play on First Lady Michelle Obama. Based on the television game show, three guests all say they are the real First Lady. Only one must tell the truth throughout the play. Perhaps, you will find the play of value to use with your students. Check it out here:http://www.gailhennessey.com/index.shtml?MichelleObamaplay2.html
I have also...