What types of measurements are useful when working with gases?
I think that a good way to measure the amount gas is density/mass because the colder the gas is the more dense it is therefore you can also tell the temperature of the gas.
You can also volume and kinetic energy etc.
How are the volume, temperature, and pressure of a gas related?
They are all different ways to measure gases.
Wednesday, December 8, 2010
Tuesday, December 7, 2010
Earthquake hits Serbia, kills two
"An earthquake struck Serbia early Wednesday, killing two people , injuring dozens and causing substantial damage in the central of kraljevo, where electricity and other services were cut" said Yahoo News
The 5.6 magnitude quake hit at 1:56 am with the most heavily damaged area being north of kraljevo which is 150 km south of Belgrade, according to the Serbian seismological institute
"A couple in their fifties was killed at Grdica, a suburb of kraljevo in the earthquake during the night" the interior ministry stated
Two women were admitted with serious injuries, which were not life threatening and dozens more people received medical treatment.
Rescue teams have been deployed but they haven't found anyone trapped under the rubble.
The tremor, one of the strongest in Serbia in the last thirty years, badly damaged some parts of the country.
The 5.6 magnitude quake hit at 1:56 am with the most heavily damaged area being north of kraljevo which is 150 km south of Belgrade, according to the Serbian seismological institute
"A couple in their fifties was killed at Grdica, a suburb of kraljevo in the earthquake during the night" the interior ministry stated
Two women were admitted with serious injuries, which were not life threatening and dozens more people received medical treatment.
Rescue teams have been deployed but they haven't found anyone trapped under the rubble.
The tremor, one of the strongest in Serbia in the last thirty years, badly damaged some parts of the country.
New Hybrid Animals
Though they rarely occur in nature, individuals from different but closely related species do occasionally mate, and the result is a biological hybrid- an offspring that shares traits from both parent species.
Here are some bizarre, but truly unique half breeds.
Zebroid: A zebroid is the offspring of a zebra and any other equine (an animal in the horse family), usually a horse or a donkey. There are zorses,zonkeys,zonies and a host of other combinations.
Savannah Cats: Savannah Cats are the name given to the offspring of a domestic cat and a serval-a medium sized, large eared wild African cat. The unusual cross became popular among breeders at the end of the 20 century, and in 2001 the international Cat Association accepted it as a new registered breed. Savannah cats are often compared to dogs in their loyalty. They can also be trained to walk on a leash and even play fetch.
Ligers: Ligers are the cross between a male lion and a female tiger, and they are the largest of all living cats and felines. Their massive size may be a result of imprinted genes which are not expressed in their parents, but are left unchecked when the two species mate. Some female ligers can grow to 10 feet and weigh 700 pounds.
Ligers are distinct from tigons, which wich come from a male tiger and a female lion. Various other big cat hybrids have been created too, including leopons (leopard+lion)
Jaguleps (Jaguar+leopard) and even lijaleps (lion+jagulep).
Beefalo: Beefalo are the fertile offspring of domestic cattle and American bison. Crosses also exist between domestic cattle and European bison (zubrons) and yaks (yakows). Beefalo were purposely created to combine the best characteristics of both animals with an eye towards beef production.
A USDA study showed that beefalo meat is lower in fat and cholesterol and also thought to produce less damage to wildlife than regular cattle.
Yahoo News
Here are some bizarre, but truly unique half breeds.
Zebroid: A zebroid is the offspring of a zebra and any other equine (an animal in the horse family), usually a horse or a donkey. There are zorses,zonkeys,zonies and a host of other combinations.
Savannah Cats: Savannah Cats are the name given to the offspring of a domestic cat and a serval-a medium sized, large eared wild African cat. The unusual cross became popular among breeders at the end of the 20 century, and in 2001 the international Cat Association accepted it as a new registered breed. Savannah cats are often compared to dogs in their loyalty. They can also be trained to walk on a leash and even play fetch.
Ligers: Ligers are the cross between a male lion and a female tiger, and they are the largest of all living cats and felines. Their massive size may be a result of imprinted genes which are not expressed in their parents, but are left unchecked when the two species mate. Some female ligers can grow to 10 feet and weigh 700 pounds.
Ligers are distinct from tigons, which wich come from a male tiger and a female lion. Various other big cat hybrids have been created too, including leopons (leopard+lion)
Jaguleps (Jaguar+leopard) and even lijaleps (lion+jagulep).
Beefalo: Beefalo are the fertile offspring of domestic cattle and American bison. Crosses also exist between domestic cattle and European bison (zubrons) and yaks (yakows). Beefalo were purposely created to combine the best characteristics of both animals with an eye towards beef production.
A USDA study showed that beefalo meat is lower in fat and cholesterol and also thought to produce less damage to wildlife than regular cattle.
Yahoo News
Hold Your Breath When you Pass a Graveyard
How it may have started
"People once believed that spirits of the dead could enter through the nose and mouth" says folklorist Elizabeth Tucker.
Why its Nonsense
The dead cant enter through your nose or mouth but livings do, though almost all are harmless. "Kids in hale around are 30,000 times a day" says pulmonologist Daniel Culver, and expert on the respiratory system.
"Every day, you breathe i hundreds of millions of bacteria and fungi". Most wont hurt you, and if dangerous bacteria do enter your lungs your body is usually able to fight them off.
National Geographic Magazine
"People once believed that spirits of the dead could enter through the nose and mouth" says folklorist Elizabeth Tucker.
Why its Nonsense
The dead cant enter through your nose or mouth but livings do, though almost all are harmless. "Kids in hale around are 30,000 times a day" says pulmonologist Daniel Culver, and expert on the respiratory system.
"Every day, you breathe i hundreds of millions of bacteria and fungi". Most wont hurt you, and if dangerous bacteria do enter your lungs your body is usually able to fight them off.
National Geographic Magazine
Monday, December 6, 2010
Fire & Ice
Sveifluhals,Iceland- Tens of thousands of years ago this place was the heart of a roiling volcanic eruption.
Molten rock bubbled up from a fissure in the Earth's crust. On top of that lay hundreds of meters of ice.Lava met ice, and the result was an inferno!
Heat from instanly boiled ice to steam, wich ramped up the eruptive power like a pressure cooker blowing its top. Magma hitting the steam exploded into tiny fragmented bits, sending pillars of fine-grained ash hovering overhead. It would have resembled the scene many people heard about on the news this spring- a volcano that erupted an hours drive to the east, in a place known as Eyjafjallajokul.
Eyjafjallajokul began erupting on March 20 but few people other than volcanologists and locals took notice at first. For weeks all it did was spurt lava gently out of exposed ridge.
On April 14,though, the eruption suddenly shifted a few kilometers west-no longer on open land , but beneath an ice cap. Just as happened at Sveifluhals, magma met ice and turned it to steam, throwing ash into the stratosphere. European airline flights shut down for days over worries about how the ash might affect jet engines.
What a difference a little ice makes! Had the second phase of the eruption not shifted westward, the volcano would not have closed down much of Europe's air traffic
Eyjafjallajokul's eruptrion has refocused attention on a small but rapidly growing subset of volcanology: the study of volcano-ice interactions. Ice covered volcanoes or "glaciovolcano" are not fundamentally different from other volcanoes in terms of "plumbing" or eruptive style. But they distinguish themselves the magma breaks through the crust and meets ice.
Molten rock bubbled up from a fissure in the Earth's crust. On top of that lay hundreds of meters of ice.Lava met ice, and the result was an inferno!
Heat from instanly boiled ice to steam, wich ramped up the eruptive power like a pressure cooker blowing its top. Magma hitting the steam exploded into tiny fragmented bits, sending pillars of fine-grained ash hovering overhead. It would have resembled the scene many people heard about on the news this spring- a volcano that erupted an hours drive to the east, in a place known as Eyjafjallajokul.
Eyjafjallajokul began erupting on March 20 but few people other than volcanologists and locals took notice at first. For weeks all it did was spurt lava gently out of exposed ridge.
On April 14,though, the eruption suddenly shifted a few kilometers west-no longer on open land , but beneath an ice cap. Just as happened at Sveifluhals, magma met ice and turned it to steam, throwing ash into the stratosphere. European airline flights shut down for days over worries about how the ash might affect jet engines.
What a difference a little ice makes! Had the second phase of the eruption not shifted westward, the volcano would not have closed down much of Europe's air traffic
Eyjafjallajokul's eruptrion has refocused attention on a small but rapidly growing subset of volcanology: the study of volcano-ice interactions. Ice covered volcanoes or "glaciovolcano" are not fundamentally different from other volcanoes in terms of "plumbing" or eruptive style. But they distinguish themselves the magma breaks through the crust and meets ice.
Sunday, December 5, 2010
Belgrade air pollution
Belgrade’s Silent Killer
This article is about air pollution in Belgrade and Serbia especially in Belgrade. The article describes how polluted the air is. The pollution originates from many sources such as coal fired heating plants, cars (particularly old cars and trucks). During winter homes in Belgrade burn a lot of brown coal which increases soot particles in the air. Recently a report from the Serbian government showed that levels of carbon monoxide, nitrogen dioxide, lead, sulfur dioxide, and volatile organic compounds were all above national and international guidelines. The government is considering several solutions : Reduction of city traffic by introducing a ticketing system for those who want to drive into the city center, Construction of a subway system, new parking zone which will make it even more expensive to park in the city center, improve public transport including GPS systems.
The article mentions that progress is slow and the mane obstacle is finances from the government.
This article is about air pollution in Belgrade and Serbia especially in Belgrade. The article describes how polluted the air is. The pollution originates from many sources such as coal fired heating plants, cars (particularly old cars and trucks). During winter homes in Belgrade burn a lot of brown coal which increases soot particles in the air. Recently a report from the Serbian government showed that levels of carbon monoxide, nitrogen dioxide, lead, sulfur dioxide, and volatile organic compounds were all above national and international guidelines. The government is considering several solutions : Reduction of city traffic by introducing a ticketing system for those who want to drive into the city center, Construction of a subway system, new parking zone which will make it even more expensive to park in the city center, improve public transport including GPS systems.
The article mentions that progress is slow and the mane obstacle is finances from the government.
Wednesday, December 1, 2010
Mammals grew humongous sizes after the dinosaurs died out.
Researchers have shown that the extinction of dinosaurs 65 million years ago paved the way for mammals to get bigger (about a thousand times bigger). Mammals grew from a maximum of about 10 kilograms when they were sharing the earth with dinosaurs to a maximum of 17 tons afterward.
In conclusion you can obviously see that after mammals didn’t have to compete with the dinosaurs for survival they thrived and grew to humungous sizes all over the world.
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