Hey you have reached Science Rocks. If you think this blog is boring please turn your computor off now.
According to the theory of continental drift, the world was made up of a single continent through most of geologic time. That continent eventually separated and drifted apart, forming into the seven continents we have today. The first comprehensive theory of continental drift was suggested by the German meteorologist Alfred Wegener in 1912. The hypothesis asserts that the continents consist of lighter rocks that rest on heavier crustal material—similar to the manner in which icebergs float on water. Wegener contended that the relative positions of the continents are not rigidly fixed but are slowly moving—at a rate of about one yard per century.
According to the generally accepted plate-tectonics theory, scientists believe that Earth's surface is broken into a number of shifting slabs or plates, which average about 50 miles in thickness. These plates move relative to one another above a hotter, deeper, more mobile zone at average rates as great as a few inches per year. Most of the world's active volcanoes are located along or near the boundaries between shifting plates and are called plate-boundary volcanoes.
Tuesday, August 31, 2010
Thursday, August 26, 2010
Mount Everest
Everest was formed about 60 million years ago.Did you know that Mount Everest is 29,035 (8850m)-found to be 6' higher in 1999.
On May 29, 1953, Sir Edmund Hillary, attemtted to make the first assent to the South Col Route.
On Aug. 20,1980, Reinhold Messner, IT, attemtted to make the first solo assent from the NE Ridge to North Face.
On Feb. 17,1980, L.Cichy and K. Wielicki, attemtted to make the first winter assent.
Mt. Everest rises a few milimeters each year due to geological forces.
Sir George Everest was the first person to record the height and location of Mt. Everest.
May 8, 1978- Reinhold Messner, IT, and Peter Habeler were the first people to make the first oxygenless asssent, AUT, via the South-East Ridge.
On May 25,1996, Cathy O'Dowd was the first woman to reach the summit of Mount Everest from both north and south sides.
On May,22,2001, Temba Tsheri became the youngest person to climb Mount Everest.
On May,25,2001 Sherman Bull became the oldest person to climb Mount Everest.
May,25,2001, Erik Weihenmeyer became the first blind person to climb Mount Everest.
On May, 24, 2000 , Appa Sherpa became the first person to climb Everest 11 times.
Babu Chiri Sherpa made the record for the longest stay at the summitt which was 21 hours and a half
In 1988, Jean-Marc Boivin of France descended from the top in just 11 minutes, paragliding.
You probably know that Mount Everest was named after Sir George Everest in 1865 ,the British surveyor-general of India. Mount Everest used to be known as Peak 15.
On May 29, 1953, Sir Edmund Hillary, attemtted to make the first assent to the South Col Route.
On Aug. 20,1980, Reinhold Messner, IT, attemtted to make the first solo assent from the NE Ridge to North Face.
On Feb. 17,1980, L.Cichy and K. Wielicki, attemtted to make the first winter assent.
Mt. Everest rises a few milimeters each year due to geological forces.
Sir George Everest was the first person to record the height and location of Mt. Everest.
May 8, 1978- Reinhold Messner, IT, and Peter Habeler were the first people to make the first oxygenless asssent, AUT, via the South-East Ridge.
On May 25,1996, Cathy O'Dowd was the first woman to reach the summit of Mount Everest from both north and south sides.
On May,22,2001, Temba Tsheri became the youngest person to climb Mount Everest.
On May,25,2001 Sherman Bull became the oldest person to climb Mount Everest.
May,25,2001, Erik Weihenmeyer became the first blind person to climb Mount Everest.
On May, 24, 2000 , Appa Sherpa became the first person to climb Everest 11 times.
Babu Chiri Sherpa made the record for the longest stay at the summitt which was 21 hours and a half
In 1988, Jean-Marc Boivin of France descended from the top in just 11 minutes, paragliding.
Friday, August 20, 2010
The first helicopters
This helicopter, designed by George De Bothezat and Ivan Jerome, made its first public flight on December 18, 1922, at McCook Field near Dayton, Ohio.
_medevac_inflight_bw.jpg)
This helicopter, built by Etiénne Oehmichen, had four lifting airscrews and five auxiliary propellers. It set flight records in 1924.
In Etiénne Oehmichen's first attempt at vertical flight, around 1920, he built a twin-rotor helicopter that had insufficient power to fly. He solved the problem by adding a balloon to the machine.
Subscribe to:
Comments (Atom)