Certified Hyperbaric Technologist Test Hyperbaric Physics Fundamentals 2

Question 1

According to Boyle's Law, what happens to the volume of a fixed mass of gas as pressure increases at constant temperature?

Accepted Answer

Volume decreases inversely

Answer

Volume increases proportionally

Answer

Volume stays the same

Answer

Volume doubles

Question 2

A gas bubble has a volume of 10 mL at the surface (1 ATA). What is its approximate volume at 2 ATA?

Accepted Answer

5 mL

Answer

20 mL

Answer

10 mL

Answer

2.5 mL

Question 3

At what depth of seawater does the absolute pressure equal 2 ATA?

Accepted Answer

33 feet

Answer

10 feet

Answer

66 feet

Answer

99 feet

Question 4

Which gas law explains why a sealed flexible container expands during ascent (decompression)?

Accepted Answer

Boyle's Law

Answer

Charles's Law

Answer

Henry's Law

Answer

Dalton's Law

Question 5

The term 'ATA' stands for which of the following?

Accepted Answer

Atmospheres Absolute

Answer

Absolute Temperature Adjustment

Answer

Air Tension Average

Answer

Ambient Treatment Atmosphere

Question 6

What is the gauge pressure at 33 feet of seawater?

Accepted Answer

1 ATA

Answer

0 ATA

Answer

2 ATA

Answer

3 ATA

Question 7

Why must hollow rigid air spaces in equipment be vented during compression?

Accepted Answer

To equalize pressure and prevent implosion or damage

Answer

To prevent freezing

Answer

To increase oxygen content

Answer

To reduce humidity