Because of the weak atmosphere, Mercury has a very wide range of temperatures. The temperatures ranges from -270 degrees Fahrenheit to 800 degrees Fahrenheit. This large range in surface temperature is possible because Mercury is so close to the Sun (a year is only 88 Earth days long) and does not have sufficient atmosphere present to moderate the range in surface temperature (www.windows.ucar.edu/tour/link=/mercury/Atmosphere/atmosphere.html).
Mercury, the innermost planet of the solar system, is a little bigger than the Earth's Moon. The surfaceof the planet is covered with craters, like the Moon, but temperatures there can reach over 800oF because Mercury is so close to the Sun and rotates so slowly. Scientists believe that the interior structure of Mercury includes a metallic core, an intermediate rocky layer, and a thin brittle crust. The composition of Mercury is probably high in iron, although surface features indicate that volcanic activity once existed at the surface. There is little evidence of motions near the surface of the planet now, although at earlier times during Mercury's evolution the surface was much more active. We know relatively little about Mercury, compared to most of the other planets, because it is relatively difficult to see and only one spacecraft has studied the planet (www.windows.ucar.edu/tour/link=/mercury/Interior_Surface/Overview.html).
Mercury is the only inner planet other than the Earth that has a significant magnetic field (220 nT). This field, along with the planet's high density and small size relative to the Earth, indicates that it probably has a molten iron core. The magnetic field has two poles, and is tilted in the same direction as Mercury's axis. Mariner 10 observed a shock wave called a "bow shock" in front of the planet, where the planet's magnetic field meets the solar wind. .
Missions to Mercury.
Mercury was visited by NASA's Mariner 10 spacecraft in 1973 and 1974.
Mercury metal has many uses. ... Mercury is well-known in the environment. We take in mercury in every mouthful of food we eat. ... There is, however, one form of mercury called methyl mercury, which is particularly dangerous. ... Avoid spillage and evaporation by covering containers of mercury and when heating mercury or mercury compounds it should be done under a well ventilated hood. ...
Mercury is named from the Greek god Mercury who was the messenger to the gods and was known for his speed; Hg comes from mercury's Latin name Hydrargyrum, which comes from the Greek word "hydrargyros" ("hydor" for water and "argyros" for silver). Mercury is one of the seven metals of alchemy (gold, silver, mercury, copper, lead, iron & tin). ... Mercury has many unique physical properties. ... Mercury has approximately eleven isotopes. ... In 1971, the United States' output of mercury was 1000 tons. ...
Mercury, (HG) is a most unusual metal. ... Mercury vapor is hazardous. ... Mercury presents a hazard to those who work with it. ... Farmers use seeds treated with compounds of mercury. ... Thus tied up, the mercury cannot attack vital enzymes. ...
Mercury Mercury is a unique element because it remains liquid at room temperature (Environment Canada 2002). ... Mercury most frequently occurs as cinnabar, which is the chief ore mineral of mercury (Environment Canada 2003). ... Mercury Cycle Mercury is cycled and recycled through a complex biogeochemical cycle (Environment Canada 2004). ... Standards for base metal smelters and incinerators, mercury-containing lamps and mercury from dental amalgam wastes have been developed. ... Reducing Mercury Levels The statement "there is no away when you throw something away " is very tr...
The main solution to get rid of worldwide mercury emissions and mercury poisoning is to limit the use of mercury, for example, in dental practice and gold mining. ... Mercury poisoning is a problem because water and fish get contaminated with mercury and are then consumed by humans, so if mercury use were limited, there would be less people poisoned by the fish. ... Mercury use is also prevalent in gold mining. ... Although it contains mercury, it is different than the mercury that has poisoned children, so while that kind of mercury should be limited, thiomersal should not be, and should be a...
This report is going to be based on the NASA Mercury Program. ... (Mercury 1) The first Mercury spacecraft was a single-passenger, cone-shaped capsule, 2 m (9.5 ft) long and 1.9 m (6.2 ft) in diameter, with a 90-cm (35-in) long cylinder mounted on top. ... (Mercury 2) The first flight, Mercury-Redstone 3, was flown by Astronaut Alan B. ... Mercury-Atlas 6 was flown in the friendship 7 on February 20th 1962 by, John H. ... The last flight in the mercury program was the Mercury-Atlas 9. ...
I found an article in the San Francisco Chronicle that was about the level of mercury in the fish that we buy in the bay area. ... The article, entitled " Mercury in the fish we buy, or catch in the bay", gave information about four different species of fish that contain a high mercury level. ... This means that the people who cannot afford choices in their food supply become highly at risk for the exposure to mercury. ... It is unfortunate that the fish carry a high mercury level and that low-income families are affected by this. Perhaps there are methods to reduce the level of mercury in...
Organic mercury is mercury combined with carbon. ... Inorganic mercury is mercury that is combined with non-carbon substances. Mercury salts are one kind of inorganic. ... Organic mercury is more dangerous than inorganic mercury. However, many inorganic mercury compounds can be converted to the organic form of Mercury. ...
Or did the Mercury Theatre broadcast play against people's media literacy? ... Understanding War of the Worlds The Mercury Theatre Broadcast of October 30, 1938 is the most famous radio broadcast of all time. ... Well's 1898 novel "War of the Worlds" on the radio series "Mercury Theatre of the Air". ... The Mercury Theatre of the Air regularly adapted novels to perform for this radio program. ...