Gas Laws & Scuba Diving Article Quiz

What is the atmospheric pressure at sea level in terms of mercury (Hg)?

• 760 mm of Hg

• 14.7 mm of Hg

• 1 atm

• 30 meters of water

Tags

NGSS.MS-ESS2-5

Why should divers not hold their breath while making emergency ascents from depths of 30 meters or more?

• To avoid decompression sickness

• To prevent air embolism (air entering the bloodstream)due to expanding trapped gases

• Because it is easier to swim to the surface

• To conserve oxygen for the ascent

What is the first part of the human body to respond to changes in atmospheric pressure?

• The lungs

• The ears

• The sinuses

• The eyes

According to Boyle's Law, how do gas volumes respond to changes in pressure?

• They increase with increasing temperature

• They decrease with increasing pressure

• They remain constant regardless of pressure changes

• They increase with increasing pressure

What effect can be observed on divers due to pressure-volume effects that is not noticeable on the body cavities above water?

• Expansion of the lungs

• Crushing of the metal can

• Air embolism

• Compression of the body cavities

According to Boyle's law, what happens to the volume of a flexible gas container when the surrounding pressure decreases to one-half its original value?

• The volume remains the same.

• The volume decreases to one-half.

• The volume approximately doubles.

• The volume quadruples.

What is the consequence of a diver ascending without proper decompression as stated in the text?

• The alveoli in the lungs can rupture, leading to various problems.

• The diver will experience an increase in air pressure.

• The diver's lung capacity will increase.

• The diver will be able to breathe more easily.

What is the approximate pressure change a diver experiences when ascending from a depth of 30 meters?

• The pressure decreases by about two atmospheres.

• The pressure increases by about four atmospheres.

• The pressure decreases by about four atmospheres.

• The pressure remains constant.

What must divers remember to do to avoid lung overexpansion injuries according to the text?

• Divers must remember to hold their breath.

• Divers must remember to breathe out regularly.

• Divers must remember to swim rapidly to the surface.

• Divers must remember to use more weights.

What is the relationship between pressure and volume of a gas as described by Boyle's law in the text?

• Pressure is directly proportional to volume.

• Pressure is inversely proportional to volume.

• Pressure is unrelated to volume.

• Pressure is equal to volume squared.