Horizon Exploration

The visible line that is often obstructed by terrain and human constructs

The intersection of obstructions with the sky, such as trees and buildings

The apparent curve separating the surface of a celestial body from its sky

A theoretical line that can only be observed accurately on a smooth surface like Earth's oceans (correct)

The celestial body's surface

The true horizon

The visible horizon

The offing (correct)

The apparent curve separating the surface of a celestial body from its sky

The true horizon that surrounds the observer and is typically assumed to be a circle

The part of the sea closest to the horizon when looking at a sea from a shore

The intersection of obstructions with the sky, such as trees and buildings (correct)

<p>Life forms such as trees and human constructs such as buildings</p> Signup and view all the answers

<p>A circle assumed to be drawn on the surface of a perfectly spherical model of the celestial body</p> Signup and view all the answers