PrepTest 22, Section 2, Question 11
Astronomer: Astronomical observatories in many areas have become useless because light from nearby cities obscures the stars. Many people argue that since streetlights are needed for safety, such interference from lights is inevitable. Here in Sandsville, however, the local observatory's view remains relatively clear, since the city has restricted unnecessary lighting and installed special street lamps that direct all their light downward. It is therefore possible to have both well-lighted streets and relatively dark skies.
Astronomer: Astronomical observatories in many areas have become useless because light from nearby cities obscures the stars. Many people argue that since streetlights are needed for safety, such interference from lights is inevitable. Here in Sandsville, however, the local observatory's view remains relatively clear, since the city has restricted unnecessary lighting and installed special street lamps that direct all their light downward. It is therefore possible to have both well-lighted streets and relatively dark skies.
Astronomer: Astronomical observatories in many areas have become useless because light from nearby cities obscures the stars. Many people argue that since streetlights are needed for safety, such interference from lights is inevitable. Here in Sandsville, however, the local observatory's view remains relatively clear, since the city has restricted unnecessary lighting and installed special street lamps that direct all their light downward. It is therefore possible to have both well-lighted streets and relatively dark skies.
Astronomer: Astronomical observatories in many areas have become useless because light from nearby cities obscures the stars. Many people argue that since streetlights are needed for safety, such interference from lights is inevitable. Here in Sandsville, however, the local observatory's view remains relatively clear, since the city has restricted unnecessary lighting and installed special street lamps that direct all their light downward. It is therefore possible to have both well-lighted streets and relatively dark skies.
The astronomer's argument proceeds by
appealing to a scientific authority to challenge a widely held belief
questioning the accuracy of evidence given in support of the opposing position
proposing an alternative scientific explanation for a natural phenomenon
making a distinction between terms
offering a counterexample to a general claim
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