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ASTRO 7N final Exam includes accurate and verified questions covering fundamental astronomy concepts such as the solar system, phases of the Moon, planetary motion, gravity, light and telescopes, and the historical development of astronomical models. Designed for students in introductory astronomy courses such as those offered at Penn State.
what is the exoplanet's orbital period, and the percent brightness drop in light, for the case int he image above from the Kepler Exoplanet Transit Hunt activity? - ANSWER-5 days and 0.30%
How do astronomers measure the temperature of stars? - ANSWER-by looking at which absorption lines are present in the star's spectrum
In the inverse square law activity above, what would the wattage of the top lightbulb need to be, such that it appeared as bright as the bottom lightbulb which is a 35-watt bulb? - ANSWER-100 watts
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the largest fraction of nearby stars (e.g., within 100 light years) are - ANSWER-red main sequence stars
which of the stars, in the diagram above, is the hottest? -
ANSWER-D
if they were all formed at the same time, which of the stars in the diagram above will live the longest? - ANSWER-B
The parallax angle of a nearby star is measured to be 0.02 arcseconds. What is the distance to the star? - ANSWER-50 parsecs
which of the following is the sequence of events for a 40-solar mass star (one of the most massive stars) - ANSWER-stellar nursery, photostar, blue star on main sequence, type 2 supernova, blackhole
star A is 9 times as luminous as star B. The two stars appear the same brightness. What is true about their distances? - ANSWER-Star A is 3 times farther away than star B
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