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
2023-12-29
77
管理
问题
All thermal radiation from a planetary surface absorbed by atmospheric greenhouse gases is re-radiated directly back toward the planet. [br]
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“…of about 5.3 degrees Celsius”可以推断本陈述错误。
转载请注明原文地址:https://tihaiku.com/zcyy/3314285.html
相关试题推荐
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
随机试题
Inher26yearsofteachingEnglish,ShannonMcCuirehasseencountessmispla
双目间接检眼镜主要用于检查A.屈光间质透明的眼内异物 B.屈光间质欠清或高度屈
在进行混凝土表面硅烷浸渍质量验收时,对强度等级不大于C45的混凝土,浸渍深度应达
()在高年级运用的比较多。A.讨论法 B.练习法 C.讲授法 D.谈话法
中性粒细胞增多最常见的原因是A:急性感染或炎症B:组织坏死或损伤C:急性失血
理财规划师在为45岁的男性客户制定保险规划时,特别应该重点考虑的风险是()。A:
人类基因组测序完成后,生物学家便一直在绘制碱基上的小差异,即单核苷酸多态性,这些
对于某特定量,其约定真值可取为()。 A.通过校准得出的值 B.多次测
资产负债表中的所有者权益包括()。A.盈余公积 B.实收资本 C.资本公积
关于带状疱疹,最具诊断意义的主要临床表现是A.发病多见于春秋季节 B.发病前可
最新回复
(
0
)