AS101 Study Guide - Quiz Guide: Astronomical Unit, Scientific Notation
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As 101 quiz #1 (correct answers appear in bold green) The distance that light travels in one year. The average distance between the earth and the sun. The distance between the sun and alpha centauri. The average distance between the earth and the moon. Using what you have learned, rank the following objects from smallest to largest (1=smallest,4=largest): earth, milky way galaxy, solar system, sun. Rank the following objects from smallest to largest (1=smallest): galaxy, filament, cluster, planet, star. The sun is about 400 times farther from the earth than the moon is. How many seconds does it take light from the moon to reach the earth? (hint: remember that we figured out in class how long it takes light to reach us from the sun. ) If a mile equals 1. 609 km and the moon is 2160 miles in diameter, what is its diameter in millimeters? (hint: 1km=1000m, and 1m=1000mm. Enter the answer in scientific notation using the blanks below. )
