Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Venus-the Clouded Planet
Venus, our nearest planetary neighbour, only 40 million km away, has its surface hidden from view by a dense yellowish-white cloud, which extends to 80 km above the surface (Fig). Venus appears to be the third brightest object in the sky after the Sun and the Moon, because of its short distance from us and because the white cloud reflects almost 76 per cent of the sunlight that falls on it. Venus appears so bright at times that, under ideal atmospheric conditions, it may be seen with the unaided eye in daytime. Venus can be best seen about three hours after sunset when it is a night object or about three hours before sunrise when it is a morning obiect. As you have read in Unit 9, Venus appears to go through phases, quite hke those oi the Moon. It requires almost 20 months for an observer to see Venus in all its phases. As revealed from the space probes, Venus has turned out to be a broiling hot planet. The surface temperatures of Venus are around 480°C. The atmosphere of Venus is made up of 96 per cent carbon dioxide gas and clouds of sulphuric acid withsmall quantities of hydrochloric and hydrofluoric acid. There we small traces of water vapour, nitrogen, argon, sulphur dioxide and carbon monoxide gases. The atmospheric pressure is 90 times the pressure we feel from the Earth's atmosphere. With its searing heat, crushing pressures and poisonous gases, Venus seems less the goddess of love of mythology and more an incarnation of hell! Life cannot survive on Venus. The high surface temperat%e of Venus comes about through what is known as the greenhouse effect. Sunlight passes through the clouds and atmosphere of Venus, and reaches its surface. The suqace on being heated, gives out infrared radiations. The carbon dioxide in the atmosphere of Venus does not let the infrared radiation escape. Thus, the heat of the Sun is efficiently trapped with only very little being able to escape. As a result, the surface temperature rises.
Define the Utilization of Amino Acid Amino acids are utilized in the liver to form plasma proteins like serum albumin, serum globulin, prothrombin and fibrinogen. Amino acids,
Explain the Reflex control - Movements of Gall Bladder Reflex control: During digestion, reflex stimulation of gall bladder takes place. Entry of acid into the duodenum reflex
a food chain that does not start with plants??
Technical innovations and Inventions: Medieval India witnessed considerable improvement and changes in the field of technology. While these changes were largely a result of
Enumerate the ratio of rainfall to temperature The effect of climatic agents on the changes taking place in the parent material is determined by the ratio of rainfall to temper
Surfaces of colloidal fractions of clay minerals The surfaces of colloidal fractions of clay minerals and humus are responsible for the cation and anion exchanges between soil
how are earths surface features built up
Explain parasympathetic Nerves System Another system that runs parallel to the sympathetic system is termed as the parasympathetic system. This system has an effect just opposi
Q. When are conditions right for harvesting a crop for local and distance markets? The conditions right for harvesting a crop for local markets: harvest in the early morning t
Explain Carbamoyl Phosphate Synthetase (CPSI) ? In the first step, the mitochondria1 enzyme Carbamoyl Phosphate Synthetase 1 converts the ammonia produced by glutamate dehydro
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd