Chapter 11: Keeping Time with the Skies - Solutions

Chapter 11: Keeping Time with the Skies - Solutions

Keeping Time with the Skies: Solutions Chapter 11: Keeping Time with the Skies - Solutions Question 1 State whether the following statements are True or False. (i) We can only see that part of the Moon which reflects sunlight towards us. True . (ii) The shadow of Earth blocks sunlight from reaching the Moon causing phases. False . (iii) Calendars are based on various astronomical cycles which repeat in a predictable manner. True . (iv) The Moon can only be seen at night. False . Question 2 Amol was born on 6th of May on a full Moon day. Does his birthday fall on the full Moon day every year? Explain your answer. Answer: No, his birthday will not always fall on a full Moon day because the lunar and solar calendars do not align perfectly. Explanation & Formula: T lunar phase cycle = 29.5 days T solar month ≈ 30 to 31 days 29.5 days ≠ 30 to 31 days The Moon’s phases follow a 29.5-day cycle, which does not match the solar year (30-31 days cycle). Q…