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."
Gifted students can be deceptive. They can appear to be high-performing, moving toward their potential, functioning at a higher level.
Then again, there is a chance it only appears that way.
Recently, I have been soul-searching and asking myself if I am really challenging my students. I am gently pushing, prodding, and encouraging them to reach new levels or are they appearing to reach those levels while their growth really remains stagnate or non-existent.
These...
Its difficult to imagine life without computers and technology in general - some days my eyes hurt from staring at screens too much. But computer science is much more in-depth than the basic Internet navigation and word processing skills many of us use in our professional lives. Coding, for example, is an important skill for students to master as we move towards the middle of this century in our electronic age, and can develop habits of mind that students can put to use in future STEM...
Perhaps, you may find the following resources at my EdWord Exchange Store of interest for January and February.
1. Learn about Russia(host of the upcoming games): http://edworldexchange.com/?q=product/russia-country-focuswebquestextensions/2093660849
2. Learn about the 2014 Games beginning in February in Sochi, Russia. http://...
In New York State, 6th grade social studies is world cultures. Here are the subjects that I taught during the school year. Wondering what is covered in 6th grade in other states. What do you teach in social studies at other grade levels?
Map skills
Prehistoric Man
Customs/customs of the world
Mesopotamian-First Historic people(also covered other groups in the region including the Phoenicians)
Ancient Egypt
Greeks
Romans
Middle Ages
Introduced...
Its bothered me that I havent been able to address the social/emotional needs of my gifted kids the way I would like.
Last school year, I worked with the schools psychologist to present my gifted fifth-graders with a workshop on perfectionism. However, due to time constraints, testing, and other challenges (excuses, excuses), I have not been able to focus on more than academic needs.
But all thats going to change! I recently came up with a projectwhich is in the experimental...
Your students may soon be following the competition that begins this February in Sochi,Russia. I especially like the skiing events. Learn about the history of the games, both past and present, which originated in Greece, with my informative webquest. There are 10 questions(each with lots of informative text) as well a number of fun facts. Extension activities are also included(and the key).The webquest can be completed in one class period and is geared for upper elementary and middle school...