Revision Questions - Set 8

Question Title

* 1. An object which is positively buoyant in salt water would ______ in fresh water?

Float

Unable to determine with the information given

Sink slowly

Be neutrally buoyant

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* 2. An object weighing 67kg is negatively buoyant in fresh water and neutrally buoyant in salt water. What is the volume of the object?

67 litres

65 litres

69 litres

Unable to determine with the information given

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* 3. Carotid sinus reflex is _, primarily caused by __.

Automatic bleeding of the sinuses / the inability to equalise air spaces

Slowing of the heart / wearing tight fitting hood or wetsuit constricting blood flow through the carotid arteries

Lung squeeze / descending too fast

Slowing of the heart / exhaling too much while descending

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* 4. A diver with a strong rapid pulse, not sweating and hot dry skin is suffering from:

Heat exhaustion

Jellyfish stings

Heat stroke

Advanced hypothermia

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* 5. When diving in extremely cold water, a regulator that has a(n) _ may be less likely to

Downstream valve / heat up

Environmental seal / freeze

Fail safe design / freeze

Closed circuit / stop

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* 6. A balanced regulator is generally better than an unbalanced regulator because:

It delivers air at the same rate even when tank pressure is low

Tank pressure neither resists or assists the function of the regulator

It is more capable of supplying two divers at the same time

All of the above

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* 7. When using the RDP for diving at an altitude greater than 300m above sea level, you need to follow these special procedures, except:

Wait a minimum of 6 hours upon reaching the altitude before diving

Slower ascent rate of 9m per minute

Actual depths must be converted into theoretical depths

When changing altitude, dive at the lowers altitude first

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* 8. USE THE RDP TABLE TO ANSWER THE FOLLOWING: A diver enters the water for his first dive at 0830 hours on a dive to 24 m for 20 minutes. At 0918 hours he re-enters the water on a dive to 18m for 32 minutes. What is his maximum allowable bottom time for another dive to 17m after a 58 minute surface interval?

30 minutes

26 minutes

53 minutes

19 minutes

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* 9. USE THE eRDPml TO ANSWER THE FOLLOWING: What is the ending pressure group at the end of a multilevel dive starting at 24m for 22mins, then up to 20m for 11mins and 12m for 15mins?

Dive not possible

Revision Questions - Set 8

Question Title

* 1. An object which is positively buoyant in salt water would ______ in fresh water?

Question Title

* 2. An object weighing 67kg is negatively buoyant in fresh water and neutrally buoyant in salt water. What is the volume of the object?

Question Title

* 3. Carotid sinus reflex is _____, primarily caused by ______.

Question Title

* 4. A diver with a strong rapid pulse, not sweating and hot dry skin is suffering from:

Question Title

* 5. When diving in extremely cold water, a regulator that has a(n) _______ may be less likely to ______

Question Title

* 6. A balanced regulator is generally better than an unbalanced regulator because:

Question Title

* 7. When using the RDP for diving at an altitude greater than 300m above sea level, you need to follow these special procedures, except:

Question Title

Question Title

* 9. USE THE eRDPml TO ANSWER THE FOLLOWING: What is the ending pressure group at the end of a multilevel dive starting at 24m for 22mins, then up to 20m for 11mins and 12m for 15mins?

Question Title

* 10. Name

* 3. Carotid sinus reflex is _, primarily caused by __.

* 5. When diving in extremely cold water, a regulator that has a(n) _ may be less likely to