SDI FINAL 2026 ACTUAL SCRIPT WITH
VERIFIED SOLUTIONS GRADED A+
⩥ As you descend:
1: Colors appear to fade.
2: Reds and oranges are among the first colors to disappear.
3: At 30 m/99 ft, little color remains other than blues, grays, blacks and
whites.
4: All of the above. Answer: All of the above.
⩥ Which of the following statements is true? There may be more than
one correct answer.
1: Water is 400 times denser than air.
2: Water is 800 times denser than air.
3: Sound travels about four times faster underwater.
4: Both the second and the third answer are correct. Answer: Both the
second and the third answer are correct.
⩥ Which of the following is/are true?
1: Water conducts heat away from your body ten times faster than air
does.
2: Water conducts heat away from your body 25 times faster than air
does.
,3: Fresh water conducts heat away from your body faster than salt water
does.
4: Salt water conducts heat away from your body faster than fresh water
does. Answer: Water conducts heat away from your body 25 times faster
than air does.
⩥ When water stratifies itself into layers, according to temperature, the
boundary between layers is known as a(n):
1: Halocline.
2: Ichtyocline.
3: Thermodyne.
4: Thermocline. Answer: Thermocline.
⩥ Which of the following is/are true?
1: Tides can make the water at a particular dive site noticeably deeper or
shallower than you may have experienced previously.
2: Tidal currents can be very strong, making diving difficult or even
dangerous.
3: Strong tidal currents can have an adverse effect on visibility.
4: All of the above. Answer: All of the above.
⩥ The sun warming water near the equator, coupled with the earth's
rotation, is the primary cause of permanent ocean currents.
1: True.
, 2: False. Answer: True.
⩥ Which of the following is/are true?
1: If caught in a rip current, swim directly towards shore, using the most
powerful kick possible.
2: If caught in a rip current, swim perpendicular to shore, until you are
completely out of the rip current, then swim in towards shore.
3: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
4: Don't fight the rip current; relax and let it carry you closer to shore.
Answer: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
⩥ We measure waves by their height and weight.
1: True.
2: False. Answer: False.
Explanation:
We measure waves by their height and length.
⩥ Which of the following best describes the formation of surf?
1: Waves energy, rebounding from its impact with shore, crashes into
oncoming waves, causing them to break.
VERIFIED SOLUTIONS GRADED A+
⩥ As you descend:
1: Colors appear to fade.
2: Reds and oranges are among the first colors to disappear.
3: At 30 m/99 ft, little color remains other than blues, grays, blacks and
whites.
4: All of the above. Answer: All of the above.
⩥ Which of the following statements is true? There may be more than
one correct answer.
1: Water is 400 times denser than air.
2: Water is 800 times denser than air.
3: Sound travels about four times faster underwater.
4: Both the second and the third answer are correct. Answer: Both the
second and the third answer are correct.
⩥ Which of the following is/are true?
1: Water conducts heat away from your body ten times faster than air
does.
2: Water conducts heat away from your body 25 times faster than air
does.
,3: Fresh water conducts heat away from your body faster than salt water
does.
4: Salt water conducts heat away from your body faster than fresh water
does. Answer: Water conducts heat away from your body 25 times faster
than air does.
⩥ When water stratifies itself into layers, according to temperature, the
boundary between layers is known as a(n):
1: Halocline.
2: Ichtyocline.
3: Thermodyne.
4: Thermocline. Answer: Thermocline.
⩥ Which of the following is/are true?
1: Tides can make the water at a particular dive site noticeably deeper or
shallower than you may have experienced previously.
2: Tidal currents can be very strong, making diving difficult or even
dangerous.
3: Strong tidal currents can have an adverse effect on visibility.
4: All of the above. Answer: All of the above.
⩥ The sun warming water near the equator, coupled with the earth's
rotation, is the primary cause of permanent ocean currents.
1: True.
, 2: False. Answer: True.
⩥ Which of the following is/are true?
1: If caught in a rip current, swim directly towards shore, using the most
powerful kick possible.
2: If caught in a rip current, swim perpendicular to shore, until you are
completely out of the rip current, then swim in towards shore.
3: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
4: Don't fight the rip current; relax and let it carry you closer to shore.
Answer: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
⩥ We measure waves by their height and weight.
1: True.
2: False. Answer: False.
Explanation:
We measure waves by their height and length.
⩥ Which of the following best describes the formation of surf?
1: Waves energy, rebounding from its impact with shore, crashes into
oncoming waves, causing them to break.
