The prime vertical is the great circle on...

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Question 1 of 2066636ee928f7522a1c519eca

The prime vertical is the great circle on the celestial sphere that passes through the __________.

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Question 1 of 20

66636ee928f7522a1c519eca

The prime vertical is the great circle on the celestial sphere that passes through the __________.

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🔍 Key Concepts

• prime vertical as a specific great circle on the celestial sphere • relationship between zenith, nadir, and horizon points • difference between circles through celestial poles vs. circles through local vertical

💭 Think About

• Think about which points define your local vertical line in celestial navigation and how that projects onto the celestial sphere as a great circle. • Ask yourself: does the prime vertical depend on the celestial poles, or is it tied to your position and local horizon? • Visualize standing on Earth: which great circle goes straight over your head and straight under your feet, but crosses the horizon at the east–west points?

✅ Before You Answer

• Identify which choices involve zenith and nadir together (your local vertical). • Check which option correctly includes the east–west orientation of the prime vertical on the horizon. • Eliminate any choices that rely on celestial poles, since those define a different great circle (the celestial meridian).

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Question 1 of 2066636ee928f7522a1c519eca

The prime vertical is the great circle on the celestial sphere that passes through the __________.

Back

Question 1 of 20

66636ee928f7522a1c519eca

The prime vertical is the great circle on the celestial sphere that passes through the __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed