SDI Final Exam Study Questions and Answers Top Graded 2024
9 views 0 purchase
Course
SDI
Institution
SDI
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. - Closer and larger than they do on land.
As you descend:
1: Colors appear to fade.
2: Reds an...
SDI Final Exam Study Questions and
Answers Top Graded 2024
possiblea
SDI
8/13/24
,SDI Final Exam Study Questions and Answers Top Graded 2024
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. - 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. - 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. - 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. - 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. - Thermocline.
Which of the following is/are true?
, SDI Final Exam Study Questions and Answers Top Graded 2024
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. - 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. - 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. - 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. - 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. - Only the third answer
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 PossibleA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
