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5.0
SDI Final Exam Questions with Detailed
Verified Answers (100% Correct
Answers) /Already Graded A+
Quiz: Objects under water appear:
1: The same size as they do on land.
2: Twice as large as they do on land.
3: Closer and larger than they do on land.
4: Smaller and farther away than they do on land.
Ans: Closer and larger than they do on land.
Quiz: 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.
Ans: All of the above.
Quiz: 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.
Sunday, 02 March 2025
,3: Sound travels about four times faster underwater.
4: Both the second and the third answer are correct.
Ans: Both the second and the third answer are correct.
Quiz: 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.
Ans: Water conducts heat away from your body 25 times faster than air
does.
Quiz: 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.
Ans: Thermocline.
Examstudy - Stuvia US
, Quiz: 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.
Ans: All of the above.
Quiz: 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.
Ans: True.
Quiz: 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.
Examstudy - Stuvia US
, 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.
Ans: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
Quiz: We measure waves by their height and weight.
1: True.
2: False.
Ans: False.
Explanation:
We measure waves by their height and length.
Quiz: 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.
2: Entering shallow water forces wave energy upward, making the
wave crest unstable and causing it to break.
3: A wave encountering shallow water begins to slow at its bottom,
while the top of the wave continues at its previous speed. This causes
the wave to break.
Examstudy - Stuvia US
In today's fast-paced educational landscape, students need reliable resources to excel in their studies.
5.0
SDI Final Exam Questions with Detailed
Verified Answers (100% Correct
Answers) /Already Graded A+
Quiz: Objects under water appear:
1: The same size as they do on land.
2: Twice as large as they do on land.
3: Closer and larger than they do on land.
4: Smaller and farther away than they do on land.
Ans: Closer and larger than they do on land.
Quiz: 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.
Ans: All of the above.
Quiz: 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.
Sunday, 02 March 2025
,3: Sound travels about four times faster underwater.
4: Both the second and the third answer are correct.
Ans: Both the second and the third answer are correct.
Quiz: 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.
Ans: Water conducts heat away from your body 25 times faster than air
does.
Quiz: 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.
Ans: Thermocline.
Examstudy - Stuvia US
, Quiz: 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.
Ans: All of the above.
Quiz: 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.
Ans: True.
Quiz: 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.
Examstudy - Stuvia US
, 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.
Ans: If caught in a rip current, swim parallel to shore, until you are
completely out of the rip current, then swim in towards shore.
Quiz: We measure waves by their height and weight.
1: True.
2: False.
Ans: False.
Explanation:
We measure waves by their height and length.
Quiz: 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.
2: Entering shallow water forces wave energy upward, making the
wave crest unstable and causing it to break.
3: A wave encountering shallow water begins to slow at its bottom,
while the top of the wave continues at its previous speed. This causes
the wave to break.
Examstudy - Stuvia US
