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."
Scott first came to me with the idea to start his own Lego robotics club during open house.
In a very matter of fact way~ he said. I know what I want to do for my research project this year.
He went on to explain how his brothers had competed in Lego robotics~ and how he wished they offered the program at the school for his age group. He said his goal was to establish a team for fourth and fifth graders~ so he could compete.
Since then~ Scott has gone after his goal...
You can't move mountains by whispering at them.
P!nk
Shes become one of the most successful music artists of her generation~ selling more than 50 million albums. When performing~ shes been known to swing like a trapeze artist overhead as she belts out her hits. Shes a straight-talking woman~ not afraid to speak her mind.
Her name is Alecia Beth Moore~ better known as the pop star sensation Pink (spelled P!nk).
The more I study creativity~ the more I...
In the News:
Bell Ringer Activity:
The Winter Games are about to begin. There is a building~called the MegaFace~ at the Olympic Village where people will get to see their faces(giant versions) on the side of the MegaFon Pavilion. It's kind of like a huge Mt. Rushmore for "regular" people. The side of the building has a screen with 10~000 pins that can extend to the shape of a person's face.Those who wish to see their face on the side of the Pavilion first need to...
Perhaps, you'd like to share the following with your students on the Monday after Groundhog Day.
Groundhog Day is Sunday, February 2nd
Groundhog Day is Sunday,February 2nd. Its a time when people look to a groundhog to find out whether or not we will be having six more weeks of winter. The idea dates back hundreds of years when people looked to hibernating animals such as badgers, hedgehogs and bears to see when they might wake up from their winter sleep. According to the...