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 (D)</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 (C)</p> Signup and view all the answers