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| 1 | |
Which isotope has 6 neutrons? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_SQ1_eq1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_SQ1_eq2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_SQ1_eq3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_SQ1_eq4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| 2 | |
Which statement concerning CFCs is true? |
| | A) | CFCs can release chlorine atoms in the stratosphere. |
| | B) | CFCs were replaced because they are toxic and flammable. |
| | C) | CFCs cannot be used under any circumstances in the U.S. |
| | D) | All CFCs contain only carbon, fluorine, chlorine, and hydrogen. |
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| 3 | |
Which statement correctly links biological effects with UV radiation from the Sun? |
| | A) | The wavelengths associated with UV-A cause the most biological damage. |
| | B) | The wavelengths associated with UV-B cause the most biological damage. |
| | C) | Both UV-A and UV-B will cause the same amount of biological damage. |
| | D) | UV-C is completely absorbed by the surface of the Earth, therefore being unable to cause biological damage. |
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| 4 | |
Today's weather report indicates an UV Index of 6-7, the "high" exposure category. Which set of sun protection measures is appropriate? |
| | A) | wear a hat and sunglasses, use sunscreen SPF 10+ |
| | B) | stay in the shade near midday, use sunscreen SPF 15+ |
| | C) | reduce time in the Sun between 10 AM and 4 PM, wear a hat and sunglasses, use sunscreen SPF 15+ |
| | D) | stay indoors to totally avoid the sun |
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| 5 | |
A diatomic molecule has the structure shown. What could be the identity of the atom "X" in the structure?
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| | A) | C |
| | B) | F |
| | C) | O |
| | D) | N |
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| 6 | |
For these three parts of the electromagnetic spectrum, which is the correct order of increasing wavelength? |
| | A) | visible, ultraviolet, infrared |
| | B) | infrared, visible, ultraviolet |
| | C) | ultraviolet, visible, infrared |
| | D) | ultraviolet, infrared, visible |
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| 7 | |
Which region of the atmosphere contains the "good" ozone that helps to protect us from ultraviolet rays? |
| | A) | ionosphere |
| | B) | mesosphere |
| | C) | stratosphere |
| | D) | troposphere |
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| 8 | |
How many protons, neutrons, and electrons are in a neutral atom of  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_SQ1_eq5.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>? |
| | A) | protons = 64, neutrons = 29, electrons = 29 |
| | B) | protons = 35, neutrons = 29, electrons = 35 |
| | C) | protons = 29, neutrons = 64, electrons = 35 |
| | D) | protons = 29, neutrons = 35, electrons = 29 |
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| 9 | |
What is the correct number of outer electrons and the correct Lewis (electron-dot) structure for carbon monoxide, CO? |
| | A) | 10 e- and  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Image2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]>
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| | B) | 14 e- and  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Image3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]>
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| | C) | 10 e- and  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Image4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]>
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| | D) | 14 e- and  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Image5.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]>
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| 10 | |
Which statement comparing these two waves in the electromagnetic spectrum is correct?
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| | A) | Wave 1 has a lower frequency and travels at the same forward speed as Wave 2. |
| | B) | Wave 1 has a higher frequency and travels at the same forward speed as Wave 2. |
| | C) | Wave 1 has a lower frequency and travels at a faster forward speed than Wave 2. |
| | D) | Wave 1 has a higher frequency and travels at a slower forward speed than Wave 2. |
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| 11 | |
Which of these types of solar radiation has the least potential for damage to biological systems? |
| | A) | infrared |
| | B) | microwave |
| | C) | ultraviolet |
| | D) | X-ray |
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| 12 | |
What was the Montreal Protocol's main strategy for reversing stratospheric ozone depletion? |
| | A) | eliminating illegal CFCs from being imported or exported |
| | B) | requiring developing and developed countries to follow the same restrictions on CFCs |
| | C) | improving computer modeling of the upper atmosphere to monitor CFCs |
| | D) | limiting the production and use of CFCs |
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| 13 | |
Which subatomic particles are found in the nucleus of an atom? |
| | A) | protons and neutrons |
| | B) | protons and electrons |
| | C) | neutrons and electrons |
| | D) | protons, neutrons, and electrons |
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| 14 | |
This graph is based on evidence gathered in 1987 from a flight into the Antarctic ozone hole. Why is it sometimes referred to as the "smoking gun" of ozone depletion evidence?
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| | A) | The graph shows some of the first evidence gathered directly from Antarctica about the ozone hole, making it particularly valuable. |
| | B) | The graph shows a direct proportionality between the concentration of ozone and the concentration of chlorine in the stratosphere, indicating the role of CFCs in ozone depletion. |
| | C) | The graph shows very little relationship between the concentration of ozone and the concentration of chlorine in the stratosphere, leading scientists to look for other links. |
| | D) | The graph shows that the concentration of stratospheric ozone fell as the concentration of stratospheric chlorine rose, helping to establish CFCs as a cause of ozone depletion. |
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| 15 | |
For any region of the electromagnetic spectrum, the energy of a photon is |
| | A) | directly proportional to the frequency. |
| | B) | directly proportional to the wavelength. |
| | C) | directly proportional to the speed of light. |
| | D) | directly proportional to Planck's constant, h. |
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| 16 | |
Which equation illustrates the first step in "steady-state" process for natural oxygen/ozone reactions in the stratosphere? (Free radicals are not indicated.) |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_q16_1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]>
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| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_q16_2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]>
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| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_q16_3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]>
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| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073048763/232420/Ch2_q16_4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>]]>
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| 17 | |
What is a free radical? |
| | A) | an unstable chemical species with an unpaired electron |
| | B) | a molecule that breaks apart in UV light |
| | C) | a different molecular form of a compound |
| | D) | one form of an element that differs in number of neutrons from another form of the same element |
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| 18 | |
O2 and O3 are: |
| | A) | isotopes. |
| | B) | allotropes. |
| | C) | catalysts. |
| | D) | isomers. |
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| 19 | |
Which is a correct statement? |
| | A) | UV-A is more energetic than either UV-B or UV-C. |
| | B) | UV-B is more energetic than either UV-A or UV-C. |
| | C) | UV-C is more energetic than either UV-A or UV-B. |
| | D) | UV-A, UV-B, and UV-C are equally energetic. |
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| 20 | |
Which statement best explains why you cannot get a suntan from standing in front of your radio? |
| | A) | All parts of the electromagnetic spectrum have the same energy and therefore radio waves would not cause a suntan. |
| | B) | The energy associated with a radio wave is not sufficient to interact with skin pigments. |
| | C) | Radio waves have long wavelengths and high frequency. Low frequency waves are necessary to interact with skin pigments. |
| | D) | The energy associated with a radio wave would be sufficient to interact with skin pigments, but the waves are shielded by the radio's housing. |
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