SDI Exam Study Guide with Complete
Solutions
Objects under water appear: - Answer-Closer and larger than they do on land
What happens to colors under water - Answer-As you descend, colors appear to
fade, not intensify. Blues and grays are the last remaining colors at depth.
Because sound trave...
its bottom, while the top of the wave continues at its previous speed. This causes the
wave to break.
what is surge - Answer✔✔-Surge is the back-and-forth movement of water caused by
waves passing over head.
What causes most aquatic animal bites? - Answer✔✔-An animal's defensive
response to a perceived threat & mistaken identity
To be injured by an animal with poisonous spines, you must: - Answer✔✔-Be the
aggressor and touch the animal first.
The states of buoyancy include all of the following except: - Answer✔✔-Passive
If you feel pain or discomfort during descent: - Answer✔✔-Ascend to the point where
you can comfortably equalize, and only then continue your descent.
Which of the following is the best way to prevent or reduce nitrogen narcosis? -
Answer✔✔-
Any time you cannot inhale while scuba diving (such as when a regulator is out of your
mouth), you must be - Answer✔✔-Exhaling.
What can help prevent decompression sickness (DCS) - Answer✔✔-safety stops,
Remain well within your dive computer's no-decompression limit, Ascend no faster than
the rate allowed by the dive computer
2/8
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 EmillyCharlotte. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
