PADI QS

A diver is 30 metres/99 feet underwater. The water pressure at this depth would be ______ times more than the pressure at the surface.

4 times

What should I do to prevent mask squeeze (a sucking or pulling feeling on my face and eyes)? Make an ah-h-h-h sound. Pinch my nose and blow against it. Wiggle my jaw from side to side. Blow into my mask through my nose.

Blow into my mask through my nose.

How can I stay with my buddy on a scuba dive? Follow another buddy team with more experience. Use an underwater compass. Decide who will lead the dive, which side of the leader I will be on, and where we are going to go. Always stay on the left of the dive boat.

Decide who will lead the dive, which side of the leader I will be on, and where we are going to go.

How can I avoid disorientation (confusion) on a dive in either low visibility or very clear water? Close my eyes. Turn slowly while I look up. Descend (go down) and ascend (go up) along a sloping bottom or by using a reference line. Take slow, deep and continuous breaths.

Descend (go down) and ascend (go up) along a sloping bottom or by using a reference line.

What is the most important feature of a scuba regulator? How easy it is to take care of it. How easy it is to breathe from. How much it costs. Whether the second stage has an adjustment knob or not.

How easy it is to breathe from.

What is the first thing I should do with an injured diver at the surface? Make the diver float and check to see if the diver is breathing. Get the diver out of the water. Find out what happened. Give the diver emergency oxygen.

Make the diver float and check to see if the diver is breathing.

What can happen to me if I hold my breath while ascending on a scuba dive? My lungs can overexpand, which could cause serious injury. My scuba equipment may not work properly. I might hurt my ears or sinuses. Nothing would happen to me.

My lungs can overexpand, which could cause serious injury.

Decompression sickness (DCS) is a condition that can be life-threatening. What in the bloodstream and tissues causes this condition? Nitrogen bubbles. Poisons. Body waste. Blood clots.

Nitrogen bubbles.

What should I do if I can't equalize (clear) my ears or sinuses while I am descending (going down)? Continue descending, but go slower. Stop descending, and try again to equalize by blowing harder. Stop and ascend a metre/few feet, and try to equalize again. Surface and wait one minute before descending again.

Stop and ascend a metre/few feet, and try to equalize again.

Imagine I accidentally get entangled in something. What should I do first? Stop, think and slowly untangle myself. Try to turn around and see where I am entangled. Ask my buddy to help untangle me. Take off my scuba unit.

Stop, think and slowly untangle myself.

For a given depth, the no stop time is shorter on a repetitive dive than on the first dive. TRUE FALSE

TRUE

If an object is neutrally buoyant in salt water, what will happen to the object if I put it into fresh water? The object will sink. The object will float. The object will not sink or float. I can't tell from the question.

The object will sink.

If I am part of a three person dive buddy team and one of my buddies gets separated: I can continue the dive as long as I stay close to my remaining buddy. all three divers should continue the dive as planned and meet up after the dive. my remaining buddy and I should turn the dive and continue to look for our other buddy. all three divers should enact the procedures for reuniting.

all three divers should enact the procedures for reuniting.

Although it shouldn't have happened, on a dive I fail to watch my SPG and run out of air. If my buddy is close by, my best option is to __________. Another option is to _____________, if I'm in shallow water and the surface is closer than my buddy. ascend using my buddy's alternate air source / make a controlled emergency swimming ascent ascend using my buddy's alternate air source / make an buoyant emergency ascent make a normal ascent / ascend using my buddy's alternate air source make a controlled emergency swimming ascent / make a normal ascent

ascend using my buddy's alternate air source / make a controlled emergency swimming ascent

After getting an unresponsive (unconscious or dazed) diver out of the water, I should keep checking for uncontrollable shaking. panic (stress). breathing. water in the lungs.

breathing.

Pain, weakness, tingling, numbness and not being able to move my arms or legs are common signs and symptoms of dehydration. oxygen toxicity (poisoning). contaminated air (bad air). decompression sickness (DCS).

decompression sickness (DCS).

I should take a local area orientation dive whenever I: dive anywhere, even if I have dived there before. dive in a new place. dive without advanced training. am not diving with an instructor.

dive in a new place.

Diving is easier, safer and more fun when I dive from a boat. dive beyond my limits. am positively buoyant. dive with a buddy.

dive with a buddy.

When diving with a computer: each buddy team should have a computer. each diver should have a computer. I do not need to make safety stops. I do not need to plan the dive.

each diver should have a computer.

I put air into a balloon underwater at 10 metres/ 33 feet and then I take it to the surface. The balloon will stay the same size. expand (become larger) to twice the size. expand to four times. expand to eight times.

expand (become larger) to twice the size.

To control my buoyancy as I ascend after a dive, I should drop all my weights. add small amounts of air to my BCD. look up and reach up with my BCD deflator in my left hand. frequently release small amounts of air from my BCD.

frequently release small amounts of air from my BCD.

Besides being required for diver training, my logbook is something that gives me a record of my dive experience. is required by law in most countries. has no purpose except for my personal interest. is required to purchase dive equipment.

gives me a record of my dive experience.

If I hold a glass full of air upside down, and I take it to the bottom of the swimming pool without tipping it, the density (thickness) of the air inside the glass will be ______ at the surface. less than greater than the same as less than or greater than

greater than

To reduce the risk of decompression sickness (DCS) I should have my cylinder filled only at a dive center I trust. ascend (go up) to a shallower depth if I feel dizzy. make a safety stop at 5 metres/15 feet at the end of each dive. breathe more slowly than normal.

make a safety stop at 5 metres/15 feet at the end of each dive.

I can prevent most surface emergencies (problems) by diving only from boats. diving with an experienced buddy in a familiar place. using the best equipment made. making myself float (positively buoyant) and reducing my physical effort.

making myself float (positively buoyant) and reducing my physical effort.

Something underwater that does not float and does not sink is positively buoyant. negatively buoyant. neutrally buoyant. partially buoyant.

neutrally buoyant.

Diving with enriched air requires special training and procedures. Using enriched air without proper training and procedures can cause my dive computer to shut down. no real harm. bad air. oxygen toxicity (poisoning).

oxygen toxicity (poisoning).

The first step in setting up and using my dive computer is reading the manufacturer's instructions. turning the unit on. setting it for fresh or salt water. testing the unit in confined water.

reading the manufacturer's instructions.

A properly fitting wet suit keeps me warm by: reducing the amount of water moving in and out of my suit. increasing the amount of water moving in and out of my suit. increasing blood flow to the skin. providing an insulating layer of air.

reducing the amount of water moving in and out of my suit.

If I experience overexertion, I should continue the dive until the symptoms go away. stop all activity, signal my buddy and rest. signal my buddy and continue the dive. ascend to a shallower depth and continue the dive.

stop all activity, signal my buddy and rest.

There is a mild current on my dive. Normally, I should begin my dive swimming with the current pushing me along. swimming against or into the current. swimming across the current pushing me sideways. The current does not affect which direction I should begin my dive.

swimming against or into the current.

Most diver injuries caused by aquatic animals happen because the animal thinks you are food. the animal is aggressive. the animal is protecting itself from the diver. the diver did not feed the animal.

the animal is protecting itself from the diver.

I should not turn off a dive computer between dives, because: doing so will void the warranty. I will not be able to log the dive information. this causes the batteries to discharge rapidly. the computer will lose all memory of residual nitrogen.

the computer will lose all memory of residual nitrogen.

When using a dive computer, I should ascend (go up) at a rate not faster than 30 metres/100 feet per minute. 18 metres/60 feet per minute. the rate specified by my computer. the ascent rate is not important.

the rate specified by my computer.

Water movement, weather and the suspended particles (floating silt) in the water affect dive time. the predive safety checks. the current. underwater visibility.

underwater visibility.