Upper limb observations of the Moon are used...

Upper limb observations of the Moon are used...

Question 1 of 2707066636ee928f7522a1c51a524

Upper limb observations of the Moon are used more frequently than those of the Sun because of the location of the Moon in the sky and the __________.

Question 1 of 27070

Q

Upper limb observations of the Moon are used more frequently than those of the Sun because of the location of the Moon in the sky and the __________.

🔍 Key Concepts

• Upper vs. lower limb observations and why one is preferred for different bodies • How the Moon’s apparent position changes compared with the Sun • What factors make the Moon’s observed altitude change noticeably in a short time

💭 Think About

• Ask yourself: which choice specifically affects how quickly the Moon’s observed altitude or position changes during a short observing period? • Which factor would make timing and limb choice more critical for accurate sextant sights? • Which option is unique to the Moon’s motion/behavior and not equally true for the Sun?

✅ Before You Answer

• Check which option is most closely tied to rate of change in apparent position rather than just a static property of the Moon. • Eliminate any choices that would apply just as much to the Sun as to the Moon. • Focus on the answer that best explains why upper limb sights are more convenient or reliable for the Moon in practice.