Ascending: Equalization and Exhaling (Boyle’s Law)

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# Ascending: Equalization and Exhaling (Boyle’s Law) - PowerPoint PPT Presentation

Ascending: Equalization and Exhaling (Boyle’s Law). By: Ylvie , Bianca and Julie. Boyle’s Law.

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## Ascending: Equalization and Exhaling (Boyle’s Law)

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Presentation Transcript
1. Ascending: Equalization and Exhaling (Boyle’s Law) By: Ylvie, Bianca and Julie

2. Boyle’s Law • Boyle's Law is the relationship between pressure and volume. When pressure get higher, the volume decreases, and when pressure decreases, the volume increases. They are inversely proportional. This information is expressed through the formula P1V1 = P2V2. When ascending while scuba diving, there is a decrease in pressure and the volume of air in the diver's body's air spaces and diving gear increases.

3. What is Equalization? • Someone is said to be equalizing when they are trying to balance the pressure between two places or things. This is related to scuba diving, because a diver must equalize the pressure in his body’s air spaces with the pressure around him.

4. Why is Equalization Important? • When a diver descends, pressure increases, which causes the air in the body to compress. When ascending, the opposite happens- pressure decreases, and the air in the body expands. The air spaces in the ears and lungs may become overfull of air. This could burst the lungs or eardrums! It is important to equalize because it helps avoid pressure related injuries.

5. How to Equalize when Ascending • The diver must equalize by releasing air from body air spaces. Pressure in the lungs can be equalized by breathing normally to exhale extra air from lungs. • In order to equalize pressure in ears, a diver can ascend slowly to allow the extra air to bubble out on its own. If this does not happen automatically, the diver may experience a reverse block in the ear which can feeluncomfortable and painful. Adiver can use techniques such as the Toynbee Maneuver in which he pinches his nose closed and swallows. This helps suck extra air pressure out of the middle ear.