When a light is first seen on the horizon it...

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Question 1 of 2066636ee928f7522a1c519a74

When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?

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🔍 Key Concepts

• How a light appears and disappears with small changes in observer height • Traditional navigational terminology for visually picking up a distant light • Difference between changing the light itself vs. changing only your viewpoint

💭 Think About

• Ask yourself: Are you moving the light or just your own eye up and down relative to the horizon? • Think about what a mariner on a small boat might do in a seaway to catch sight of a distant light that is right on the verge of the horizon. • Which term have you heard used to describe the up‑and‑down motion of a vessel (or a person) in waves, affecting what can be seen?

✅ Before You Answer

• Make sure the term describes observer motion, not the light being turned on/off or blocked. • Eliminate any option that sounds like you are altering the light source instead of your own height of eye. • Consider which word is commonly associated with up‑and‑down movement in seas rather than with hiding or testing a light.

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