Chapter 8 - Awareness of the Dive Environment Flashcards
Being knowledgable about the biological and physical properties of the underwater world is important because it helps you with dive planning. It’s also important because divers are __________ about the organisms they’ve seen and discovered and expect you to be reasonably knowledgeable about the local aquatic habitat.
curious
You can learn a great deal about the underwater environment in the ____________ Specialty Diver courses, as well as the PADI Underwater Naturalist course.
Project AWARE
Diving in an environmentally responsible manner is important so you role-model this behavior. It’s also important because
a. divers are a significant threat to the underwater environment.
b. anything else is actually unsafe.
c. your buddy probably will not do so.
d. it’s part of the credibility needed to be environmental ambassadors.
d. it’s part of the credibility needed to be environmental ambassadors.
Water covers approximately ____ percent of the Earth’s surface.
71
The “oceans” are actually one big connected ocean. Beyond this, the ______________ is thought to ultimately connect all water on Earth.
hydrological cycle
The ocean provides oxygen and ___________, both of which are vital to life on Earth.
heat distribution
______________ are the base of the marine food chain.
Phytoplankton (Primary producers)
Many scientists think the coral reef is the most diverse ecosystem on Earth.
True
False
True
Because they are highly productive, coral reefs require water that is high in nutrients.
True
False
False
________ forests are important to the survival of adjacent coral reef ecosystems.
Mangrove
To support sustainable fisheries, be an educated consumer who only buys sustainable, managed species and support the establishment of _______________ (MPAs).
Marine Protected Areas
Heat can be a pollutant.
True
False
True
Efforts to counter alien (invasive) species are very effective, especially the practice of introducing alien (invasive) counter species that act as predators.
True
False
False
A good rule of the thumb is that if you don’t recognize an aquatic organism you should
a. kill it.
b. end the dive.
c. notify the local environmental authorities.
d. None of the above.
d. None of the above.
Currents that affect divers are most commonly caused by the Earth’s rotation, waves, tides, and ________.
wind
Generally, the recommendation when diving in a current to swim __________ the current at the start of the dive.
into
________ diving is a common practice where strong, unabated currents exist.
Drift
Most upwellings result from the ______.
wind
Depending upon how they affect conditions, dive planning may need to account for the tides and tidal currents, or the tides may have so little effect that you don’t need to consider them.
True
False
True
A wave breaks in water that is ___ times its height.
1.3
The most common disturbing force that causes waves is ______, though passing vessels can also cause waves large enough to topple divers and equipment on a nearby dive boat.
wind
Wave can affect divers by
a. requiring the use of surf diving procedures
b. making it difficult to stand on a boat deck.
c. causing seasickness.
d. All of the above.
d. All of the above.
The Project AWARE Foundation is a government-funded international organization that involves divers and water enthusiasts in projects, activities, and efforts that protect and conserve underwater environments.
True
False
False
