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Earth's Core Hotter Than First Believed

coreUsing 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."

 

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Energy in Flight: Take-Aways from a...

  • In a recent article by William Parker, he provides leaders with some similarities of leadership to flying in the fog. As a person who formally held a private pilot's license, I have a few additional comments to enrich his ideas.
  1. !. Have a flight plan! In others words-Know the goals and the direction of your school!
  2. 2. Know your instruments-Know how to read feedback and follow data!
  3. ...

Energize the Conversation: Use Maps!

  • As a teacher of Advanced Placement World Geography, I spend a great deal of time helping students use, interpret, and enjoy maps. Here are a few for your grins and giggles! I am confident there are places you can use them in your school as a good opener for conversations, brain activator, or sponge-time as people enter a meeting! Lead with visual maps! Watch the conversation energize!

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Energy: Critical Advice from Harvard...

In this thoughtful Harvard Business Review article~ Boris Groysberg and Robin Abrahams (Harvard Business School) offer advice to maxed-out~ stressed-out leaders who have concluded that work/life balance is an unattainable goal. The authors and their collaborators spent five years interviewing 4~000 executives around the world and report that prospering in the senior ranks is a matter of carefully combining work and home so as not to lose themselves~ their loved ones~ or their foothold on...

Energy: Foundation for Human Potential

  • As a long standing and active member of the Foundation for Human Potential, I invite you to see the results of our recent symposium in Chicago. The Foundation features amazing scientist, educators, entrepreneurs, artists, and performers in a quest to appreciate and understand the capacity of the human spirit to see and know life without limits! Follow the Foundation's work on Facebook and @ExploreFHPGreat way to introduce students to the work of foundations!
  • Enjoy!
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Free Presidential Trivia Webquest/...

Check out this free web quest on Presidential trivia-lots of interesting facts! http://gailhennessey.com/index.shtml?presidentcyberhunt.html

*Illustration from publicdomainclip-art.blogspot.com

There have been many polls taken on the...

What Model Works Best for Gifted Kids?

Which program serves as the best model for gifted children?

Thats an interesting question~ sure to bring out a variety of responses. In this blog~ Id like to share my opinionbut please remember~ its just that~ simply an opinion.

Based on my experience and research~ I have to confidently say that while there is no one perfect system~ no holy grail so to speak of gifted delivery models~ I would recommend some combination of using a separate classroom or pull-out program with...

Energy: Celebrate Today with Bill of...

  • The Bill of Rights Foundation (BRinstitute) is sponsoring an exciting contest asking students to tweet the name of their favorite president and why! It is a great way to have students use Twitter~ see what other students are saying~ and join a national "conversation". Happy Presidents Day at #myfavoritepresident ! Join the fun today!
  • ...

Energy Crisis: February in the Classroom

  • Every academic knows that in February there is always an energy dip in the classroom that has nothing to do with the temperature outside. It is all indeed part of the circle of life in a school. I~ as the senior administrator and teacher~ am trying to combat that dip by sparking a new day for professional development.
  • With students enjoying a long weekend on the slopes~ visiting college campuses~ or whatever they are doing to refresh themselves~ our professional work day will be...

Heralding: A New Look at SMART Goals

  • Everyone talks about the SMART goals~ the acronym stands for Smart~ Measurable~ Attainable~ Results Oriented~ and Time Bound (SMART). While I am not a critic of these ideas and understand the need for goals like this~ with my teaching hat on~ I rarely use them. In addition~ with my high school principal hat on~ SMART goals are rarely high enough for my school.
  • Specific-important learning...

Even Candy has a History!

I love history....always have~ especially world history. Unfortunately~ kids don't always see the excitement in history. Maybe~ showing that history is all around them~ even in CANDY~ might be a way to spark an interest in the subject.

Marshmallows date back to 2000 BC in ancient Egypt and King Tut's Tomb contained licorice! Did you know that the earliest "lollypop" was probably eaten by prehistoric people that placed honey from a bee hive onto a stick? Did you know that candy...

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