The temperature of our planet, heat absorption by certain gases in the atmosphere.
218591
The greenhouse effect, simply stated, is what keeps this planet habitable. W/o it, life as we know it, would not exist.\n\nGreenhouse gases such as water vapor, carbon dioxide, methane, nitrous oxide, etc. all act to insulate the earth. These gases, however, make up a minute percentage of all the gases in the atmosphere. Less than one percent all together to be exact.\n\nThe planet Venus, has what we would call a "runaway greenhouse effect". Carbon Dioxide makes up most of Venus' atmosphere.\n\nGlobal warming, however, is an increase in average global temperature. How does the greenhouse effect relate to global warming???\n\nIt is not so much the greenhouse effect in itself but rather the increase of greenhouse gases that leads to global warming. Some scientists believe that humans have lead to an unnatural increase in these particular gases. On the flip side, there are other scientists who believe that this is a natural cycle, one of many that the earth has been though since forming.\n\nThere is a lot of controversy on this matter. However, I believe while we should err on the side of caution, I do not believe that giving up cars to ride bikes is the answer. Not yet anyway.
446196
No. The sun is to far away.\n\nWould we use gas to get it there? Because if we did we would be adding to our global warming situation while trying to beautify our planet. It would be counterproductive (If not impossible) any way you look at it.
258022
The interior of the Earth reaches temperatures of 5650 ± 600 kelvins [3] [4]. The planet's internal heat was originally generated during its accretion (see gravitational binding energy), and since then additional heat has continued to be generated by the decay of radioactive elements such as uranium, thorium, and potassium. The heat flow from the interior to the surface is only 1/20,000 as great as the energy received from the Sun.
229266
When gas is compressed in a thermally insulated vessel the gas is heated.\n\nWhen pressure increases temperature increases.\n\nSimilarly if the gas is expanded in a thermally insulated vessel the gas is cooled.\n\nWhen the pressure decreases the temperature decreases. \n\nNear earth’s surface, the atmospheric pressure is very high.\n\nAt a height of 30km from the surface, the pressure of air is almost zero.\n\nThough the hot air goes up; as it goes up the pressure decreases and volume increases (density decreases) and as per the  gas equation the temperature decreases.
146751
Global warming is a term used to describe the trend of increases in the average temperature of the Earth's atmosphere and oceans that has been observed in recent decades. The scientific opinion on climate change, as expressed in the UN Intergovernmental Panel on Climate Change (IPCC) Third Assessment Report in 2001 and explicitly endorsed by the national science academies of the G8 nations in 2005, is that the average global temperature has risen 0.6 ± 0.2 °C since the late 19th century, and that it is likely that "most of the warming observed over the last 50 years is attributable to human activities" [1]. The increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing and agriculture, and other human activities, are the primary sources of the human-induced component of warming. The natural greenhouse effect keeps the Earth about 33 °C warmer than it otherwise would be; adding carbon dioxide to a planet's atmosphere, with no other changes, will make that planet's surface warmer.\n\nObservational sensitivity studies [2] [3] and climate models referenced by the IPCC predict that global temperatures may increase by 1.4 to 5.8 °C between 1990 and 2100.\n\nThe range of uncertainty results in large part from not knowing the volume of future carbon dioxide emissions. In addition, there is uncertainty about the accuracy of the underlying climate models.\n\nThe increase in global temperatures is expected to result in other climate changes including rises in sea level and changes in the amount and pattern of precipitation. Such changes may increase the frequency and intensity of extreme weather events such as floods, droughts, heat waves, and hurricanes, change agricultural yields, cause glacier retreat, reduced summer streamflows, or contribute to biological extinctions. Although warming is expected to affect the number and magnitude of these events, it is difficult to connect any particular event to global warming.\n\nAlthough most studies focus on the period up to 2100, warming would be expected to continue past then, since CO2 has a long average atmospheric lifetime [4]. Also, Climate commitment studies indicate that there is a further warming of perhaps 0.5 °C to 1.0 °C — already committed but not yet realized.\n \nThere are only a few scientists that contest the view that humanity's actions have played a significant role in increasing recent temperatures. However, uncertainties do exist regarding how much climate change should be expected in the future, and a hotly-contested political and public debate exists over what, if anything, should be done to reduce or reverse future warming, and how to cope with the consequences.
653485
The sun is about 15 million degrees C. at its core and about 11000 degrees C. on its surface. Way too hot for anyone to get anywhere close to it.
363188
The Sun has a spectral class of G2V. "G2" means that it has a surface temperature of approximately 5,500 K, giving it a white color, which because of atmospheric scattering appears yellow.
112134
Our planet is a long way off of having a new ice age. The earth cycles seem to be on the warmer side. We will get through that then swing back to another ice age, thousands of years.
83047
Come on!  Dry Ice!\n\nTemperatures below -78 degrees Farenheit\n\nAnd your planet is Mars, but its water AND carbon dioxide in the polar caps....
579440
The correct choice is 1) warmer due to absorption of long-wave infrared by greenhouse gases. \n\nVenus's atmosphere not only contains CO2 at 90 bars, it also contains water vapor, and clouds of sulphuric acid, all of which absorb heavily within the IR spectrum.\n\nThis website will show you a graph that compares the wavelengths absorbed by various greenhouse gases:\n(scroll about halfway down)\nhttp://brneurosci.org/co2.html\nKeep in mind that the CO2 absorption bands are widened by the high atmospheric partial pressure of CO2 on Venus, making it even more significant than the graph shows.
110180
for every 167 meter increase in the first layer of the atmosphere there is one degree Celsius decrease in temperature.If you get the temperature of the gas,in this case atmosphere, you can calculate the pressure by using the ideal gas law equation.
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The sun emits energy at a rate of P = 4x10^26 W. The amount of power density that reaches the icy planey is then this\n\nPd = P/(4*pi*R^2)\n\nwhere R is the distance from the sun to the planet. This is the total flux of energy emitted by the sun spread over the surface area of a sphere of radius R. The albedo (A) of a planet indicates how much of the incident energy is reflected back into space. The absorbed power density is then\n\nPa = (1 - A)*Pd = (1 - A)*P/(4*pi*R^2).\n\nThe absorbed energy heats the planet and also leads to radiation. The radiated power follows the Stefan-Boltzmann law\n\nPr = e*s*T^4\n\nwhere e is the emissivity, s is Stefan's constant, and T is the temperature of the radiating body. Stefan's constant is s = 5.67x10^-8 W/(m^2*K^4), and for a blackbody, the emissivity is one.\n\nAt equilibrium, the absorbed power and the radiated power are equal\n\n(1 - A)*P/(4*pi*R^2) = s*T^4\n\nwhich can be solved for T, the temperature of the planet.\n\nThe temperature of the planet will impart kinetic energy to gas molecules in the air. The speed of the molecules will be distributed with an rms spedd os\n\nVrms = sqrt(3*k*T/m) = sqrt(3*R*T/M)\n\nwhere k is Boltzmann's constant, R is the universal gas constant, m is the mass of the molecule, and M is the molar mass.\n\nFor a planet the escape velocity for an object is given by\n\nVesc = sqrt(2*G*M/r)\n\nwhere G is the universal gravitation constant, M is the mass of the planet, and r is the planet's radius.\n\nIf the speed of the gas molecules is greater than the escape velocity of the planet, then that planet will not be able to retain that gas at the given temperature.
81885
11.B Cause\n12.C The atmosphere keeps Earth warm.\n13.B Feeding habits and migration.\n14.D While and however.\n15.A A paragraph should have one main topic.
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Articles at end.\n\nCO2 is 30% higher than it has been for 650,000 years. Methane is 130% greater. These are two of the main pollutants humans put into the atmosphere in excess, and they are two of the primary greenhouse gases.\n\nLook at the 'hockeystick', which shows a dramatic warming since 1950 after a fairly stable climate for 1000 years. In fact, the 10 hottest years in recorded history have all happened since 1990, with 2005 being the hottest, and 2006 is shaping up to maybe break that record.\n(see links below)\n\nHow's that for proof of man's fault in this? There is ample proof, any real scientist will tell you that.\n\nThere has NEVER been an article doubting man's influence on global warming published in a peer-reviewed journal. A recent study of almost 1000 proved that.\n\nYes, the earth naturally heats and cools, but the rate and amount we are warming now is unprecedented in the recent geologic past. We are doing this, and we must stop it. This is not some political statement or rhetoric. This is science trying to educate a crass, ignorant public of the damage they are doing. The magnitude of temperature increase ALREADY is about 10x that of the 'little ice age' of the middle ages, and rate and amount are only going up. \n\nJust to be clear, glacial and interglacial cycles are mainly controlled by astronomical fluctuations, but we have a detailed record of the last 7 cycles, and what the climate and CO2 is doing now is way different and extreme. The rate of increase is much higher than in the past AND the value itself is much higher.\n\nHI CO2: \nhttp://news.bbc.co.uk/1/hi/sci/tech/4467420.stm\nHOCKEY STICK: \nhttp://news.bbc.co.uk/1/hi/sci/tech/5109188.stm\nGeneral climate stuff: \nhttp://news.bbc.co.uk/1/hi/sci/tech/3897061.stm
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If you are talking about the sun's surface, then the earth's core is hotter than it, because the earth's core is 15,000 C while the sun's surface is 5,000 C only. But if you compare the earth's core with the sun's core, then the sun's core temperature is estimated to be 14,000,000 C - 15,000,000 C.
156143
They are liquefying. Because the temperature of the planet is getting warmer...it is pollution and connected effects that are working on that side.\n\nIt is too simple and not really exhaustive as explanation but I think it is the basic concept...
360093
Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades.\n\nThe Earth's average near-surface atmospheric temperature rose 0.6 ± 0.2 °Celsius (1.1 ± 0.4 °Fahrenheit) in the 20th century [1]. The prevailing scientific opinion on climate change is that "most of the warming observed over the last 50 years is attributable to human activities"[2].\n\nThe increased amounts of carbon dioxide (CO2) and other greenhouse gases (GHGs) are the primary causes of the human-induced component of warming[3]. They are released by the burning of fossil fuels, land clearing and agriculture, etc. and lead to an increase in the greenhouse effect. The first speculation that a greenhouse effect might occur was by the Swedish chemist Svante Arrhenius in 1897, although it did not become a topic of popular debate until some 90 years later. [4]\n\nClimate sensitivity is a measure of the equilibrium response to increased GHGs, and other anthropogenic and natural climate forcings. It is found by observational [5] and model studies. This sensitivity is usually expressed in terms of the temperature response expected from a doubling of CO2 in the atmosphere. The 2001 IPCC report estimates a likelyhood between 66% and 90% for a climate sensitivity in the range 1.5–4.5 °C (2.7–8.1 °F)[6]. This should not be confused with the expected temperature change by a given date, which also includes a dependence on the future GHG emissions and a delayed response due to thermal lag, principally from the oceans. Models referenced by the Intergovernmental Panel on Climate Change (IPCC), using a range of SRES scenarios, project that global temperatures will increase between 1.4 and 5.8 °C (2.5 to 10.5 °F) between 1990 and 2100.\n\nAn increase in global temperatures can in turn cause other changes, including a rising sea level and changes in the amount and pattern of precipitation. These changes may increase the frequency and intensity of extreme weather events, such as floods, droughts, heat waves, hurricanes, and tornados. Other consequences include higher or lower agricultural yields, glacial retreat, reduced summer stream flows, species extinctions and increases in the ranges of disease vectors. Warming is expected to affect the number and magnitude of these events; however, it is difficult to connect particular events to global warming. Although most studies focus on the period up to 2100, warming (and sea level rise due to thermal expansion) is expected to continue past then, since CO2 has an estimated atmospheric lifetime of 50 to 200 years. [7]. Only a small minority of climate scientists discount the role that humanity's actions have played in recent warming. However, the uncertainty is more significant regarding how much climate change should be expected in the future, and there is a hotly contested political and public debate over implementation of policies that deal with predicted consequences, what, if anything, should be done to reduce or reverse future warming, and how to deal with the predicted consequences.\n\nYou could get more information from the link below...