SDI OPEN WATER SCUBA DIVER EXAMINATION TEST 2026 COMPLETE QUESTIONS AND SOLUTIONS 100% CORRECT

SDI OPEN WATER SCUBA DIVER EXAMINATION
TEST 2026 COMPLETE QUESTIONS AND
SOLUTIONS 100% CORRECT


◉Density . Answer: How heavy something is for its size.


◉Light absorption . Answer: Light gets dimmer the deeper you go.


◉Refraction . Answer: Water bends light and makes things look closer
and bigger.


◉Color loss . Answer: Colors fade with depth, starting with red and
orange.


◉Sound underwater . Answer: Sound travels faster and is hard to
locate.


◉Heat loss . Answer: Water pulls heat from your body quickly.


◉Pressure . Answer: Increases as you go deeper underwater.

, ◉Barotrauma . Answer: Injury caused by trapped air expanding or
shrinking.


◉Equalization . Answer: Balancing pressure in your ears and mask.


◉Mask squeeze . Answer: Mask presses on your face if not equalized.


◉Ear squeeze . Answer: Pain from pressure if ears are not equalized.


◉Reverse block . Answer: Trapped air expands during ascent and
causes pain.


◉Sinus squeeze . Answer: Pressure pain in your forehead or face when
descending.


◉Tooth squeeze . Answer: Pain in teeth from trapped air while diving.


◉Boyle's Law . Answer: As pressure goes up, air volume goes down.


◉Charles' Law . Answer: Air expands when it gets warmer.


◉Dalton's Law . Answer: More pressure means more gas goes into
your body.