In the horizon system of coordinates what is...

Question 1 / 2707066636ee928f7522a1c5198a6

Question 1 of 2707066636ee928f7522a1c5198a6

In the horizon system of coordinates what is equivalent to the equator on the Earth?

Question 1 of 27070

In the horizon system of coordinates what is equivalent to the equator on the Earth?

🔍 Key Concepts

• Horizon system of coordinates – how positions are measured relative to an observer’s horizon • How the Earth’s equator functions in the geographic coordinate system (0° latitude great circle) • Which circle in the horizon system is the basic reference for altitude (0°)

💭 Think About

• In the geographic system, what special circle serves as the reference line from which latitude is measured? • In the horizon system, what special circle serves as the reference line from which altitude is measured? • Which option names a circle that is 0° altitude, analogous to 0° latitude on Earth?

✅ Before You Answer

• Identify which choice represents a great circle around the observer, not a vertical line or set of small circles • Check which option is used as the zero reference for measuring altitude in the horizon system • Eliminate any answer that describes vertical circles or lines through the zenith rather than the basic horizontal reference circle

Question 1 of 27070

In the horizon system of coordinates what is equivalent to the equator on the Earth?

Horizon

Principal vertical circle

Parallels of altitude

Prime vertical circle