NASE Dive Class Practice Test

Question: 1 / 400

What do masks allow divers to see underwater by creating in front of their eyes?

Air bubbles

Masks create a clear air space in front of a diver's eyes, allowing for improved visibility underwater. This air space reduces the distortion and blurriness that would occur if a diver’s eyes were submerged directly in water. The correct answer focuses on how the mask enhances the diver's ability to see clearly, which is essential for safety and enjoyment while diving.

With a properly fitted mask, light enters the air-filled space, and the diver can see clearly as their eyes are not directly in contact with the water, which can cause light to refract differently. This clear vision is crucial for identifying underwater features, navigating the environment, and spotting marine life.

In contrast, while air bubbles, water pressure, and light refraction are relevant concepts in diving, they do not specifically address the primary function of the mask in enhancing vision underwater.

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Water pressure

Light refractor

Clear vision

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