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midterm 2 questions 1

midterm 2 questions 1 - 11 CFCs were developed in the early...

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MECO 280 – Pollution and Human Health 1) How many miles above the earth’s surface is the ozone layer? 12 to 25 miles 2) Which UV radiation is needed to produce Vitamin D? UVA 3) Which atom destroys the most ozone? Chlorine 4) Which atom destroys the least ozone? Carbon 5) The ozone layer was formed about 1 billion years ago 6) The wavelength of UVA radiation is 320-380 NM 7) Which type of UV radiation causes the most DNA damage on the earth’s surface? UVB 8) The recent increase of the world average temperature correlates with the recent rise of the concentration of atmospheric Carbon dioxide 9) The wavelength of UVC radiation is 250-290 NM 10) Which UV radiation is mostly filtered by the atmosphere? UVC
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Unformatted text preview: 11) CFCs were developed in the early 1930s 12) What does Y represent in the chemical reaction below? O3+Y O2+O UVB 13) Which of the following atoms is not a halogen? Hydrogen 14) Which of the following on the electromagnetic spectrum has the lowest wavelength? Gamma Rays (highest energy) 15)Which of the following on the spectrum has the highest wavelength? AM radio 16) Which color has the highest frequency on the electromagnetic spectrum? Violet 17) The __________ is the unit of frequency Hertz 18) The __________ is the unit of wavelength Meter 19) How many nanometers are in a … Meter – one billion 10^9 Millimeter – one million 10^6 Micron – one thousand 10^3...
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