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[answered] 1. A. Why do scientists use the metric system of measuremen


1. A. Why do scientists use the metric system of measurement instead of the English system of measurement? What is scientific notation and why is it useful? Include math examples for each part.

B. Why are some distances measured in light-years and some in astronomical units? Include a definition of each of these distance measurements.

C. Answer Review Questions 2 and 4 and Problems 2 and 4 on page 21a (Chapter 2) of the Seeds textbook. Include all computations for the problems.

2. A. Discuss stellar magnitude. Include in your answer the definition of the term and the difference between absolute and apparent magnitudes.

B. Relate how the magnitude scale was originally organized by Hipparchus and how today?s astronomers have modified it.

3. A. Explain the difference between the orbital period of the moon around Earth (sidereal period) and the length of the lunar cycle (synodic period).

B. Explain why lunar eclipses occur, comparing and contrasting what happens during a total and a partial eclipse.

 


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