Sports Diver Knowledge: ST1 - Sport Diving ST1 - Sport Diving Question Title * 1. 'Going with the flow of the current' is generally known as ________ diving? Sport Technical Ocean Drift Reef OK Question Title * 2. When do Spring tides occur? Please select all that apply. at full moon at first quarter moon at third quarter moon roughly every 14 days at new moon roughly a week after a Neap tide OK Question Title * 3. Which diagram below corresponds to a neap tide? OK Question Title * 4. What abbreviation is used for the point of maximum depth during the tide cycle? CD HW LW Np Sp OK Question Title * 5. In most places around the UK, if there is a high tide at 09:00 hours, at what time approximately will the next one occur? 12:00 15:00 18:00 21:00 09:00 next day OK Question Title * 6. If the depth at LW is 10 metres and the tidal range is 5 metres, what is the depth at HW? 5 metres 10 metres 15 metres It depends whether it is springs or neaps Impossible to say OK Question Title * 7. When the tide is rising it is said to be on the _______? ebb flood turn wane wax OK Question Title * 8. The period when a tidal current slows down and reverses is known as ________? Low water High water Neap tide Slack water Slow water OK Question Title * 9. Which of the following are reasons why static sites are best dived at slack water? Please select one answer only. no need to fight the current lower gas consumption no risk of being swept away easier for surface cover to pick up divers all of the above OK Question Title * 10. Ground swell is a backwards and forwards or side-to-side motion felt on the seabed caused by _________? Tidal currents Seaweed or kelp Ocean currents Wave action Boat wake OK Question Title * 11. Which of the following can lead to reduced underwater visibility? Please select all that apply. Windy weather Plankton blooms Run-off from rivers and land Soft sediments on the seabed Careless use of fins Depth Currents OK Question Title * 12. Which of the following significantly affects water temperature? Please select all that apply. Climate Depth Ocean currents Salinity Thunderstorms Thermoclines OK Question Title * 13. What causes the water temperature to be higher on the west coast of the UK than on the east? The Gulf Stream The North Sea is shallower than the seas on the west coast Global warming Ireland and the Outer Hebrides insulate the west coast OK Question Title * 14. If you are weighted for neutral buoyancy in fresh water, what will you need to do when diving in the sea with the same equipment? Remove weight Add weight Leave your weights the same OK Question Title * 15. Which of the following can make it difficult to see divers or their surface markers? Please select one answer only. Rain Fog Waves Glare All of the above OK Question Title * 16. Which of the following lines up with the advice given about boat diving? Please select all that apply. Sometimes you can get in the water but recovery may be difficult Sometimes you can get out of the water but you can't get in If it's calm at the dive site it will be a smooth journey to reach it Blue skies and sunshine mean calm seas Use more than one lookout if the waves are big OK Question Title * 17. How should you surface at a dive site where there is a lot of boat traffic? Quickly Slowly Assertively With caution Recklessly OK Question Title * 18. Where can you obtain knowledge of the conditions at a dive site? Please select one answer only. The Dive Manager's brief The Lead Instructor's brief A dive centre Dive books and magazines All of the above OK Question Title * 19. As a final precaution before a dive you should make a _________? Prayer Offering Donation Sanity check Buddy check OK Question Title * 20. Know your _______? Buddy Rights Enemy Limits Dive manager OK DONE