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."
Did you know that the Wright Brothers' plans for their Wright Flyer airplane was turned down by the U.S. Army? Did you know that the distance of the Wright Flyer was less than that of the wingspan of today's 747 Jet? Did you know that only 7 people came to witness the December 16~1903 flight(and TWO of these people were Wilbur and Orville)? I've developed a fun and informative webquest which you may find of value to use with your students. Additionally~ I have included some activities which...
Bobby isnt the best student. He doesnt get all As. He is not always interested in what the teacher has to say. Socially~ hes awkward.
However~ there is one thing Bobby loves~ and thats technologyand hes good at it. This boy wants to know everything about computers~ how they work~ what they look like inside~ how to repair them. In between lessons~ he fixes the teachers computers.
Bobby also assists the schools technology person~ installing keyboards~ batteries and...
It is one of the most beloved film franchises of all time, and now Star Wars has been examined and presented as a means to teach world history. A new book entitled Star Wars and History claims that the epic space story parallels many earthly historical events. Star Wars creator George Lucas has denied any intentional links to actual events, but...
As an educator~ ask yourself this question:
When is the last time your students got to pursue their own interest during the school day?
If you are like most teachers~ and honest with yourself~ the answer is probably never. With standardized
testing dominating class time and so many standards to teach~ classroom teachers cannot be blamed for
the lack of time children have in school to pursue what they love. However~ with a little creativity~ and
yes~ a little...
Do you have the Time?
by Gail Skroback Hennessey
http://www.gailhennessey.com
People have long wanted to remember important events...thats why time recording developed. Time was recorded based on rulers reigns~ the Olympic Games and the movement of the earth~ sun and moon. Use the activities to help discuss time recording and timelines. Hope you find this resource of value!
...Each generation has a personality~ characteristics and preferences that define their behavior and their views of the world. Millennials~ those born between 1980 and 2000~ are no different. Their arrival in the professional world has significant implications for the workplace~ across sectors but including and perhaps especially education.
The October issue of Learning Forwards JSD features...
We've all heard about summer learning loss. Students lose between one and two months' worth of academic knowledge each summer. Low-income students are particularly sensitive to this phenomenon some research suggests that more than half of the achievement gap seen in reading between these students and their wealthier peers can be attributed to summer loss.
So across the nation,...
I've updated my Mayflower and Pilgrim Webquest.
...Gifted for All
Students taking ownership of their learning, developing their strengths and pursuing their passions, gaining transferable life skills, creating real-world products for real audiences.
The more I study gifted education, the more I believe the strategies and approaches used for gifted children could greatly benefit the entire education world.
Too often, gifted education is mistakenly considered a privilege of the...
British newspaper The Guardian has put together some terrific tips for using current technologies to teach languages. In an article by Emma Durry, teachers can see how everything from cutting edge tech like QR codes to antiquated tools...