首页
登录
职称英语
All thermal radiation from a planetary surface absorbed by atmospheric greenhous
All thermal radiation from a planetary surface absorbed by atmospheric greenhous
游客
2025-01-25
24
管理
问题
All thermal radiation from a planetary surface absorbed by atmospheric greenhouse gases is re-radiated directly back toward the planet.
The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.
Solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface, which then emits this energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases, which in turn re-radiate much of the energy to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the structure so that heat is not lost by convection.
If an ideal thermally conductive blackbody were the same distance from the Sun as the Earth is, it would have a temperature of about 5. 3 degrees Celsius. However, since the Earth reflects about 30% of the incoming sunlight, this idealized planet’s effective temperature (the temperature of a blackbody that would emit the same amount of radiation)would be about — 18 degrees Celsius. The surface temperature of this hypothetical planet is 33 degrees Celsius below Earth’s actual surface temperature of approximately 14 degrees Celsius. The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.
Earth’s natural greenhouse effect makes life as we know it possible. However, human activities, primarily the burning of fossil fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming.
1. All thermal radiation from a planetary surface absorbed by atmospheric greenhouse gases is reradiated directly back toward the planet.
2. Re-radiation results in an elevation of the average surface temperature above what it would be without the gases.
3. Scarcely can solar radiation at the frequencies of visible light passes through the atmosphere.
4. Greenhouse gases can re-radiate much of the energy of infrared radiation to the surface and lower atmosphere.
5. The mechanism and the way it retains heat is of the same with that of the greenhouse.
6. If an ideal thermally conductive blackbody were the same distance from the Sun as the Earth is, it would have a temperature of about 15. 3 degrees Celsius.
7. About 30% of the incoming sunlight can be reflected by the Earth.
8. The greenhouse effect and some other factors produce the difference between the actual surface temperature and the effective temperature.
9. Earth’s natural greenhouse effect makes life impossible.
10. The burning of fossil fuels and clearing of forests have intensified the natural greenhouse effect.
选项
A、正确
B、错误
答案
B
解析
根据原文“…in all directions…part of this re-radiation…”可以推断本陈述错误。
转载请注明原文地址:https://tihaiku.com/zcyy/3928840.html
相关试题推荐
Allthermalradiationfromaplanetarysurfaceabsorbedbyatmosphericgreenhous
Allthermalradiationfromaplanetarysurfaceabsorbedbyatmosphericgreenhous
Allthermalradiationfromaplanetarysurfaceabsorbedbyatmosphericgreenhous
Allthermalradiationfromaplanetarysurfaceabsorbedbyatmosphericgreenhous
Scientistsbelievea2.7percentdropingreenhousegasemissionseachyearfor
Thecountriesthatarebeingblamedfortheextragreenhousegasesintheatmosp
Thelessthesurfaceofthegroundyieldstotheweightofthebodyofarunner,
Thecountriesthatarebeingblamedfortheextragreenhousegasesintheatmosp
Johnsonwassoabsorbedinhisnovelthatheforgotabouthisdinnercookingin
Thehard,outsurfaceofthetoothiscalledenamel.A、outsideB、appearanceC、out
随机试题
Inadistributionof850differentmeasurements,xcentimetersisatthe73rdpe
Thebasiccomponentsofasentenceinclude______.A、anounandaverbB、asubjec
严寒地区处于水位升降范围内的混凝土应优先选择以下哪种水泥?()A.矿渣水泥
下列关于商业银行协定存款的表述,正确的是()。A.超过基本存款额度的存款按
根据以下材料,回答题 Heworkstenhoursaday,ma
郁证的预后多为A.差 B.极差 C.良好 D.迁延难愈 E.不一定
下列各项,不属于贝母瓜蒌散组成药物的是A.橘红B.茯苓C.桔梗D.半夏E.花粉
一年级小学生计算时往往扳着手指算,这种思维叫( )A.形象思维 B.动作思维
公安群众工作信息化的内容主要有( )。A.通过信息宣传去教育、动员、调动群众的
下列统计指标中,属于质量指标的有()。A.汇总劳动力数 B.农民人均所得
最新回复
(
0
)