10 Science Misconceptions
This is a video about common Science Misconceptions. There are 10 misconceptions including “Glass is a Liquid” and “De-oxygenated blood is blue”. Enjoy.
Japan’s newest island keeps on growing, and it has now taken on a cartoonish look.
Previously called Niijima, the volcanic island that first broke above the Pacific Ocean on November 20 has merged with a neighboring uninhabited island called Nishino Shima as it continues to expand.
The small volcanic island sits about 600 miles (970 kilometers) south of Tokyo in Japanese waters, part of a chain of about 30 small islands called the Bonin Islands, or the Ogasawara chain.
The newest island is now about eight times bigger than it was when it first emerged. On November 20, it was about 1,640 feet (500 meters) off Nishino Shima, but the two islands have joined together, their growing connection marked by a narrow pool of reddish seawater.
Since the name Nishino Shima predates the newest part of the island, convention dictates sticking with that name for the combined landmass.
Regardless of the name, observers online have suggested that aerial photos of the new landmass show it resembles the outline of the classic cartoon character Snoopy.
Twitter user @etienneeshrdlu quipped: “Exactly as Nostradamus predicted. A new Snoopy-shaped island rises from the sea near Tokyo.” Twitter user @astralpouch wrote: “Holy crap … Snoopy island … I don’t care what they say I’m going over there.”
The island formed from the action of an underwater volcano, which released billowing smoke, steam, ash, and rocks from an explosive crater. (Watch video.)
In November, Japanese scientists were unsure how long the island would last, as the ocean often reclaims such volcanic islets within a short time.
But last month, Japanese scientists said they expect the island tosurvive for at least several years, if not permanently.
According to NASA’s Earth Observatory, the volcano last erupted in 1973 and 1974.
The new island mass lies about 80 miles (130 kilometers) from the nearest inhabited island. While most people in Japan live on its four large islands, the nation is actually made up of thousands of islands, some of which have been involved in territorial disputes with China.
Agates are semi-precious gemstones that are a variegated form of chalcedony (pronounced kal-sed’-nee), which is silicon dioxide in the form of microscopic fibrous quartz crystals. Agates naturally develop when an empty pocket inside a host rock fills in molecule-by-molecule, layer-by-layer as these microcrystals self organize to form concentric bands or other patterns. The colors and arrangement of the microcrystals are influenced by changes in pressure, temperature, and mineral content that occur during the formation process. Unlike other gemstones, each agate is unique. Even slabs cut from the same specimen will vary in color and design.
Agates develop as secondary deposits in hollow cavities, called vesicles. Although they can form in all types of host rock, most of the world’s agates developed in ancient volcanic lava. When the continents were first forming, layers of molten lava pushed toward the earth’s surface through rift zone cracks, volcanoes, and other geologic events. Within the lava, there were pockets of trapped gases. Later, these gases escaped through cracks that formed as the igneous rock cooled and hardened, leaving hollow cavities. Other cracks and seams also formed when adjoining sections of lava cooled at different rates.
These empty cavities and seams filled with fluids rich in dissolved and suspended quartz molecules (silica), as well as other mineral impurities. When the silica concentration became supersaturated, it developed a gelatin-like consistency either throughout the pocket or in a layer that served as the active crystallization front. Over time, the silica molecules began to form miniature fibrous microcrystals that attached to the sides of the cavity or seam. During the filling-in process other mineral impurities collected at the inside of the chalcedony silica band, forming intervening and often contrasting bands. This pattern repeated until the entire vesicle was filled in, or until all the silica rich solution was used up. If there was the proper balance of silica and mineral impurities, then the entire cavity filled with alternating bands. If there was an insufficient quantity of mineral impurity or if the pressures and temperatures changed, the cavity completed filling in with macrocrystalline quartz, or another form of silica.
First photo credit: http://www.flickr.com/photos/92003338@N04/10275488393/in/pool-97068393@N00/
Russia’s Klyuchevskaya volcano, one of the most active in the world, has been erupting since mid-August. Last month, it became even more intense, spewing ash from its summit (16,000 feet above sea level) in a plume that reached 32,000 feet above the Earth, along with fountains of lava. NASA’s Landsat 8 satellite grabbed a shot of Klyuchevskaya, located on Russia’s volcano-dense Kamchatka peninsula, in late October after its most explosive activity had calmed down.
This false-color image shows snow and ice as blue-green, ash, clouds and steam as gray, and lava as red.
This is Trinitite, a remnant of the first ever atomic bomb blast. Also known as Alamogordo glass, it was left on the desert floor after the Trinity nuclear bomb test on 16 July 1945, near Alamogordo, New Mexico. The glass is mostly made up of arkosic sand and quartz that was melted by the atomic blast. It’s usually green, but there are also rare black versions, which contain iron from the tower constructed for the test, and red versions, which contain copper from the device used in the blast.
5 of the most Amazingly Beautiful (and absolutely terrifying) Sinkholes
Life is rather chaotic. On any given day, we are plagued by a number of unexpected and frightening events—divorce, death, sickness, accidents—the list goes on and on. And this list doesn’t even include any of the natural disasters that spring up: tornadoes, hurricanes, volcanic eruptions. Yet, when all is said and done, there is one thing you can rely on…the ground beneath your feet. Although it may quake and tremble from time to time, for the most part, we have solid soil to stand on. And even through the Earth my rumble, we know that it’s not really going anywhere. At least, it seems that way…but unfortunately, the Earth is not quite as stable as it seems.
Sinkholes: These terrifying monsters are massive holes that open up in the Earth without warning. They can be as small as a car, or they can span hundreds of acres. Some dip just a few meters into the earth, while others are over 600 meters (2,000 feet) deep. These beasts have swallowed people, cars, trees, and even entire houses or city blocks. Sinkholes are terrifying; they are unstoppable; they are deadly; and they are almost entirely unpredictable.
Learn about some of the most amazing sinkholes at: http://www.fromquarkstoquasars.com/5-of-the-most-amazingly-beautiful-and-absolutely-terrifying-sinkholes/