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."
Whether you are teaching ancient Egyptians and are discussing mummies or need some fun mummy information for around Halloween~ I have compiled lots of fun mummy facts. For example:
1. Some male and female mummies were buried with extra hair wigs!
2. The mummy of Pharoah Ramses 11 has a PASSPORT! When his mummy traveled to France from Egypt~ a passport was issued for his travels!
3. Licorice root and watermelon seeds were found in King Tut's tomb including a change of...
Recently~ the school where I teach rolled out the Response to Intervention model (R.T.I.). My first thoughts were the same as they shared by advocacy groups such as the National Association for Gifted Children several years ago~ when R.T.I. went mainstream.
Where do gifted students fit into this model?
For those unfamiliar with the model~ R.T.I. involves using tiered-levels of support~ with the first and second tier using small-group interventions and...
Internet startup Academia.edu is moving forward with plans to change the way scientists publish papers, thanks to a second round of funding the company has recieved.
Flush with just over $11 million in capital, Academia is inching closer to its goal of publishing all...
Co-teaching is often compared to marriage.
It can be lots of work.
Add to the relationship a teacher of general education and another who specializes in gifted~ and depending on the situation~ it could be compared to a marriage where the spouses speak different languages.
If youve attended trainings on co-teaching~ then youre aware of best practices and the various models: One teacher instructs~ the other supports (research shows this is the most common approach...
The call to expand learning time to ensure that American students remain competitive with their international peers has become quite popular. While the rationale is perhaps a bit misguided (some evidence suggests that our students already experience as much instructional time as their peers~ and...
I'd like to know who coined the saying~"Sticks and stones may break your bones~ but names can never hurt you."? I've never found this to be true. Words are very powerful and negative words can hurt...a lot! I have found some helpful resources which teachers might wish to review on the topic of bullying. Go to my website to see the list of resources(stories~ links~ video clips~etc.) I have compiled. http://gailhennessey.com...
My daughter~ a fourth-grade student~ excels academically. She works hard in school and earns straight As. And while I wont go as far as to slap a My Daughter is an Honor Roll student sticker on my car bumper~ I am very proud of her.
The problem is that her academic performance is no guarantee that she will be successful in the real world~ at least not as many define success. Her strong study habits~ ability to read at higher levels~ or good penmanship does not necessarily mean...