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."
Since their inception, schools have continually sought to improve in response to demands from teachers, administrators, parents, policymakers and legislators. When we look at the research into improving schools and examine the keys to school improvement, it invariably boils down to the ability of the people within the school to function as a professional learning community. A professional learning community (PLC) shares a vision. A vision is generally created by the principal to move the...
Some excerpts were used from "Enhancing A High-Performing School Culture and Climate." Bulach, Lunenburg and Potter
The type of principal needed in a high-performing school calls for a new approach to directing K-12 schools. The principal, faculty, staff, school board, parents and the community work together to create a shared vision of how to help all students achieve their highest potential. Each school is considered a professional learning community (PLC). This is a term that has...
Once you are offered the position, there are several next steps.
You should have provided vital information to the human resources department at the school district: such as a social security card, drivers license, passport, etc. You will probably be drug tested and fingerprint. HR will ask for your work experience (usually 5-10 years), all college transcripts, professional certificates, etc.
Most school districts will have orientation opportunities so you may be better...
I hope you find these hiring tips helpful. Remember first impressions count!
In today's world, interviewing can be on-line or in person. Many of these tips can be used in either case.
Do you remember what you were doing on December 14, 2012? I do. I remember it like it was yesterday. I was working in my office at a university when I suddenly began receiving messages about a school shooting in Connecticut. I kept reading and reading, and then I would cry because I could empathize with those teachers as I had been in a classroom not too long ago. It is a day I will never forget -- the day the...
I have spent over 50 years working in education from K-university. I have seen my fair share of educational politics on all levels. As school administrators you need to be aware of this in order to stay out of the political battles that you might arise. I have been a K-12 educator in 9 school districts in 5 states. I have also been a school board member and a university professor that worked with educational leaders. I have seen excellent school boards and superintendents and not so good...