An upper limit to the Venus surface pressure of 25 bars is obtained by combining a mechanical model of the atmosphere with an atmospheric model that reproduces the observed brightness temperature of the planet. It is also shown that carbon dioxide is not a minor constituent of the Cytherean ...
The surface of Venus(金星)has never seemed very hospitable. Temperatures change around 470°C(900°F), the result of a runway greenhouse effect,and the pressure of its atmosphere, thick with carbon dioxide and sulfuric acid, is some 90 times that of Earth's. Lead(铅)would flow like water...
解析:原文There is now strong evidence, however, that Venus has no liquid at its surface.所以Venus lacks liquids是文章的主要论点,而具体证据包括高温、高压力和厚云层阻隔阳光到达地面。 正确答案为:Venus's high surface temperatures, Venus's high atmospheric pressure, Venus's thick cloud cover 2. The...
The surface of Venus(金星)has never seemed very hospitable. Temperatures change around 470℃(900℉), the result of a runway greenhouse effect,and the pressure of its atmosphere, thick with carbon dioxide and sulfuric acid, is some 90 times that of Earth's. Lead(铅)would flow like water on...
Due to these similarities Venus is considered as ‘twin-planet’ of Earth. However, Venus also possesses many dissimilarities with Earth such as lack of any intrinsic magnetic field2,3, high surface pressure (~93 bar), atmospheric composition (predominantly CO2), and high surface temperatures1...
The atmospheric pressure on the surface of Venus is currently more than 90 times that of Earth, but in the early days of the planet, Venus' surface pressure could have been dozens of times greater. This could have lasted over a relatively long time period of 100 million to 200 million yea...
The atmospheric pressure at the surface is 92 bar, equivalent to the pressure a kilometer under the ocean, and the atmosphere is primarily composed of carbon dioxide. The tops of Venus’ mountains are slightly cooler: at the top of Maxwell Montes (10.4 km above mean elevation), pressure is ...
“Chabaixi is one of the countless forms of tea-making techniques in China. The importance of chabaixi is not only that this technique is unique in the world, but also it gives us a window into people’s lifestyle in the Song Dynasty, a period of time when leisure activities in some ...
Conditions on Venus are extraordinarily harsh: ~100 atmospheres of pressure, temperatures of 475° C (890° F) and the chemical actions of sulphuric acid. Under these conditions, common materials like aluminum and glass soften or melt, titanium and magnesium can combust, and organic compounds can...
However, Venus has a much more massive atmosphere than its terrestrial sibling, with a surface pressure about 90 times higher and a composition predominantly of carbon dioxide, which is a minor constituent on the Earth. The surface of Venus is covered with signs of recent or currently active ...