Dive Theory Quiz

Question 1.

What is the most important rule in scuba diving?

A. Ascend slowly

B. Breath continuously and never hold your breath

C. Look dope doing it

D. Buddy contact

Question 2.

An object that is positively buoyant means it will:

A. Float

B. Sink

C. Neither float or sink

D. Will break the laws of physics and both float and sink

Question 3.

The missing parts of the table are:

A. 2 bar/ata, 1/2, x3

B. 3 bar/ata, 1/2, x4

C. 3 bar/ata, 1/3, x5

D. 7 bar/ata, 1/12, x10

Question 4.

What are the four main pressure affected areas in our body?

A. Lungs, stomach, eyes, ears

B. Lungs, mouth, heart, ears

C. Lungs, ears, sinuses, mask

D. Elbows, toes, shoulders, groin

Question 5.

How often should you equalise your body air spaces during descent?

A. When it hurts

B. You Don't

C. Every 10m

D. Every metre or when you feel pressure

Question 6.

If you encounter trouble equalising your ears while descending you should:

A. Blow really hard to force the equalisation to happen

B. Take your regulator out and put the piece of gum you have in your pocket into your mouth. Hey it works on planes right?

C. Keep going down. It will eventually go away

D. Ascend slightly try again. If still not possible end the dive

Question 7.

Sound travels how many times faster underwater?

A. 4

B. 3

C. 2

D. 1

Question 8.

Water conducts heat how many times faster than air?

A. 10

B. 15

C. 20

D. 25

Question 9.

Objects underwater often appear

A. Larger and closer

B. Smaller and further away

C. Larger and further away

D. Smaller and closer

Question 10.

If you begin to tire, start to panic or feel like you can't get enough air, you should?

A. Ascend straight to the surface

B. Stop all activity and rest. Hold onto something for support if possible.

C. Take your buddy's alternate air source

D. Cry

Question 11.

The most important feature of a weight system is:

A. To have enough weights to sink

B. To sit comfortably around your hips

C. To have a quick release to enable you to drop your weights if needed

D. The colour

Question 12.

Your alternate air source should be stored:

A. On the stomach clip of your BCD

B. You don't need an alternate air source

C. On the back of your gear next to the tank

D. In the triangle created between your chin and your ribcage

Question 13.

When diving in a current you should generally begin your dive:

A. Against the current

B. With the current

C. Across the current

D. Like a sultana?

Question 14.

What is the most important rule concerning aquatic life?

A. Never feed the animals

B. Do not tease or harass the animals

C. Only take photos of the animals if they give their consent

D. Always put them back if you pick them up

Question 15.

A diver comes to the surface. They are panicking. You are on the boat. What is the first thing you should do?

A. Jump in. Swim over to them. Force them in any way possible to inflate their BCD.

B. Abandon them. Not your problem.

C. Call out to them. Try and get them to inflate their BCD. Throw an inflatable life ring to them.

D. Jump in. Head over and talk to them. Stay out of reach and try and lead them back to shore.

Question 16.

Are those who are overweight, smokers, fatigued or cold more likely to experience decompression sickness?

A. No, they are just as likely as anyone else regardless of the above factors

B. No, they are less likely to get decompression sickness

C. Possibly yes, possibly no. There aren't enough factors to say either way.

D. Yes they are. However it does not necessarily mean they WILL get decompression sickness.

Question 17.

To check for contaminated air you should do these two thing:

A. Taste the air and smell the air. See if you can sense any oily or rusty residue in the air.

B. Check first your primary and then secondary regulator and see if there is a difference in taste.

C. Put a sample of the air in your tank into a sealed container. Take that container to a professional to have it analysed

D. Use a nitrox analyser to check the air for contaminates. Then remove any air with too high carbon monoxide

Question 18.

What is decompression sickness?

A. Stomach pains causing a person to bend over in pain. Which is where the nickname "the bends" comes from.

B. Nitrogen bubbles coming out of saturation in your body tissues.

C. Oxygen bubbles travelling around your body blocking blood flow.

D. A lung overexpansion injury (pneumothorax) leading to serious medical complications.

Question 19.

Nitrogen narcosis tends to affect divers at approximately what depth?

A. 10m

B. 20m

C. 30m

D. 40m

Question 20.

What does a dive computer do?

A. Allows you to play snake on those long safety stops.

B. Tracks the amount of nitrogen in your body tissues

C. Is a glorified depth gauge

D. Uses an algorithm to track the theoretical amount of nitrogen your body tissues have absorbed

Question 21.

What is the maximum safe ascent rate?

A. 18m per minute. Or as specified by my computer.

B. 9m per minute.

C. Go up as fast as you like. What's the worst that could happen?

D. As fast as your fastest bubbles.

Question 22.

At the end of your PADI Open Water Course you will be qualified to a depth of:

A. 30m

B. 18m

C. 40m

D. 12m