SDI FINAL EXAM WITH 65 QUESTION AND VERRIFIED ANSWERS + SDI Certification Exam Review68 QUESTIONS AND ANSWERS
7 views 0 purchase
Course
SDI
Institution
SDI
SDI FINAL EXAM WITH 65 QUESTION AND VERRIFIED ANSWERS + SDI Certification Exam Review68 QUESTIONS AND ANSWERSSDI FINAL EXAM WITH 65 QUESTION AND VERRIFIED ANSWERS + SDI Certification Exam Review68 QUESTIONS AND ANSWERSSDI FINAL EXAM WITH 65 QUESTION AND VERRIFIED ANSWERS + SDI Certification Exam Re...
SDI FINAL EXAM WITH 65 QUESTION
AND VERRIFIED ANSWERS + SDI
Certification Exam Review68 QUESTIONS
AND ANSWERS
,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. - CORRECT ANSWERS-Closer and larger
than they do on land.
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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. - CORRECT
ANSWERS-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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-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.
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.
4: As waves enter shallow water, the distance between wave crests (wave length) shortens,
increasing the tendency to break. - CORRECT ANSWERS-Only the third answer (A wave
encountering shallow water begins to slow at it bottom, while the top of the wave continues at its
previous speed; this causes the wave to break) is correct.
Surge:
1: Occurs when waves force water between facing rock ledges.
2: Is the back-and-forth movement of water caused by waves passing over head.
3: Is the backwash of water from waves breaking on shore.
4: None of the above. - CORRECT ANSWERS-Surge is the back-and-forth movement of water
caused by waves passing over head.
Which 'if any' of the following are true?
1: Aquatic animals present a greater risk to divers than any other factor.
2: Most aquatic animal bites result from an animal's defensive response to a perceived threat or,
on rare occasions, from a case of mistaken identify.
3: Because they are perceived as more aggressive, men are more likely to be the victim of an
aquatic animal attack than women are.
4: None of the above. - CORRECT ANSWERS-Most aquatic animal bites result from an
animal's defensive response to a perceived threat or, on rare occasions, from a case of
mistaken identify.
Psoriacysts produce toxins that, when touched, can produce symptoms ranging from a mild
rash or sting to anaphylactic shock or even paralysis.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller DOCSTUVIA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
