[情報] 大氣系普化考題
特地去大氣系站抓來的(他們沒有系板)
真是佛心來著的我，順便賺發文數吧XD
答案是他們提供的，有錯別怪我 哈哈
1.UV Radiation can be classified into three distinct spectral ranges by
wavelength, which is UVA, UVB, and UVC, their range of wavelength is shown
below:
name range(nm)
UVA 320~400
UVB 290~320
UVC 200~290
Some facts:
1.High-frequency UV radiation damages our body more than
low-frequency
UV radiation.
2.O3 layer in the stratosphere can absorb some UV radiation.
Solar flux and O3 absorption coefficient varies with wavelength of EM
wave.
The relationship can be shown by the following diagram:
(圖http://aki-tsuki.myweb.hinet.net/q.jpg)
(1) At the top of the atmosphere(ex:500 km above the ground), which kind of
UV radiation has the most radiation flux?
UVA:
(2) UVA is relatively harmless to our body. If O3 layer can almost absorb
all the UV radiation in their absorption wavelength range, which kind
of
the UV radiation affect us the most?(we are on the ground) (UVB or
UVC)
UVB
2.Write the equation cycle that atomic chlorine decompose ozone molecules.
(Elementary step and net reaction)
Cl + O3 --> ClO + O2
+) ClO + O --> Cl + O2
--------------------------------------------
O3 + O --> 2O2
3.Arrange the following layers of atmosphere with respect to the latitude
from
low to high (mesosphere stratosphere thermosphere troposphere), and
decribe
the temperature change with respect to the altitude, and explain the
reason: of stratospheric temperature change.
Troposphere->stratosphere->mesosphere->thermosphere
decreasing increasing decreasing increasing
The absorption of UV radiation from sun by ozone heats the air.
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