5 Questions
What is the true horizon?
A theoretical line that can only be observed accurately on a smooth surface like Earth's oceans
When looking at a sea from a shore, what is the part of the sea closest to the horizon called?
The offing
What is the visible horizon?
The intersection of obstructions with the sky, such as trees and buildings
What is the horizon obscured by on Earth?
Life forms such as trees and human constructs such as buildings
What does the true horizon surround the observer with?
A circle assumed to be drawn on the surface of a perfectly spherical model of the celestial body
Test your knowledge of celestial bodies and observational perspectives with this quiz on the horizon. Explore the concept of the true horizon and how it affects viewing directions from the surface of celestial bodies.
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