Question

In what year was the Alvin, a deep diving

vehicle, tested at 6,000-foot depths?

1. 1961
2. 1965
3. 1969
4. 1971"

Answer 1

An object in water appears shallower than it actually is due to refraction. People can sustain neck and spinal injuries from misjudging the depth when diving into unfamiliar waters.

Step-by-step explanation:

The reason why an object in water appears to be at a depth shallower than it actually is due to a phenomenon called refraction. Refraction occurs when light travels from one medium (such as air) to another medium (such as water) and changes speed. When light rays enter the water at an angle, they bend or refract, which makes the object appear closer to the surface than it actually is.

People can sustain neck and spinal injuries when diving into unfamiliar ponds or waters because they may misjudge the depth. When water is clear and the bottom is visible, it is easier to judge the depth accurately. However, in unfamiliar waters with poor visibility, it becomes more difficult to accurately perceive the depth, leading to the risk of diving into shallow water and hitting the bottom.