How to read tidal patterns for fishing and navigation - Exam
  • 1. What is a tide?
A) The rise and fall of sea levels caused by the gravitational forces of the Moon and Sun.
B) A sudden surge of water caused by earthquakes.
C) The average depth of the ocean.
D) Ocean currents created by wind.
  • 2. What primarily causes tides?
A) The Moon's gravitational pull.
B) The Sun's heat.
C) Wind patterns.
D) The Earth's rotation.
  • 3. What is a spring tide?
A) Tides that only occur in the spring season.
B) Tides with the largest tidal range, occurring during new and full moons.
C) Tides that occur during a solar eclipse.
D) Tides with the smallest tidal range.
  • 4. What is a neap tide?
A) Tides that have a very fast current.
B) Tides that occur during a lunar eclipse.
C) Tides that only occur in the autumn season.
D) Tides with the smallest tidal range, occurring during quarter moons.
  • 5. What moon phase causes spring tides?
A) Waxing gibbous.
B) New moon and full moon.
C) First quarter moon.
D) Third quarter moon.
  • 6. What moon phase causes neap tides?
A) Full moon.
B) New moon.
C) First quarter moon and third quarter moon.
D) Waning crescent.
  • 7. What is tidal range?
A) The distance a tide travels horizontally.
B) The vertical difference between high tide and low tide.
C) The amount of time between high and low tide.
D) The speed of the tidal current.
  • 8. What is a tidal current?
A) An underwater waterfall.
B) A stream of fresh water flowing into the ocean.
C) The horizontal movement of water caused by the rise and fall of tides.
D) The vertical movement of water during a tide.
  • 9. Flood tide refers to...
A) The incoming tide.
B) A particularly strong tide.
C) A tide that overflows onto land.
D) The outgoing tide.
  • 10. Ebb tide refers to...
A) A particularly weak tide.
B) The outgoing tide.
C) The incoming tide.
D) A tide that recedes very slowly.
  • 11. How do you typically find tide information?
A) Weather forecasts.
B) Tide charts or tide tables.
C) Almanacs.
D) Star charts.
  • 12. What do tide charts predict?
A) The times and heights of high and low tides.
B) The weather conditions at sea.
C) The speed of ocean currents.
D) The location of fish.
  • 13. Why are tide predictions important for navigation?
A) To find the safest route around icebergs.
B) To avoid running aground in shallow waters.
C) To determine the best fishing spots.
D) To predict the weather.
  • 14. How can tidal currents affect boat handling?
A) They have no effect on boat handling.
B) They can push a boat off course or make it difficult to maneuver.
C) They can automatically steer a boat.
D) They can help a boat travel faster.
  • 15. When are tidal currents typically strongest?
A) During neap tides.
B) At high tide.
C) At low tide.
D) Around mid-tide, both flood and ebb.
  • 16. What is a slack tide?
A) A tide that does not occur.
B) A tide that is late.
C) A tide that is very strong.
D) The period of little to no current between flood and ebb tides.
  • 17. Slack tide is advantageous for...
A) Fishing in deep water.
B) Docking and maneuvering in tight spaces.
C) Traveling at high speed.
D) Sailing against the current.
  • 18. How does wind affect tides?
A) Wind speeds up the tidal cycle.
B) Wind has no effect on tides.
C) Wind cancels out the effects of tides.
D) Wind can pile up water on one side of a body of water, affecting local water levels.
  • 19. How does barometric pressure affect tides?
A) Barometric pressure has no effect on tides.
B) Low pressure can cause higher tides, and high pressure can cause lower tides.
C) Barometric pressure changes the speed of the tide.
D) High pressure causes higher tides.
  • 20. What does it mean when a tide chart states 'MLLW'?
A) Mean Higher High Water.
B) Mean Lower Low Water.
C) Mean Low Water.
D) Maximum Low Water.
  • 21. Why is understanding tides important for fishing?
A) Tides only affect boat navigation.
B) Tides can influence fish behavior and location.
C) Tides control the weather.
D) Tides have no impact on fishing.
  • 22. During what part of the tidal cycle are fish often most active?
A) During the changing tides, especially flood tides.
B) During slack tide.
C) At high tide.
D) At low tide.
  • 23. How can tides affect access to fishing spots?
A) Tides can expose or cover areas, affecting access to shore fishing or shallow water areas.
B) Tides create new fishing spots.
C) Tides only affect access to offshore fishing spots.
D) Tides never affect access to fishing spots.
  • 24. What is a diurnal tide?
A) A tidal pattern with two high tides and two low tides per day.
B) A tidal pattern with irregular tides.
C) A tidal pattern with one high tide and one low tide per day.
D) A tidal pattern that changes every hour.
  • 25. What is a semi-diurnal tide?
A) A tidal pattern with one high tide and one low tide per day.
B) A tidal pattern with two high tides and two low tides per day.
C) A tidal pattern that only occurs twice a year.
D) A tidal pattern with irregular tides.
  • 26. What is a mixed tide?
A) A tidal pattern with two high tides and two low tides of unequal height each day.
B) A tidal pattern that changes every day.
C) A tidal pattern that only occurs during spring tides.
D) A tidal pattern with equal high and low tides.
  • 27. Why is it crucial to understand the local tidal patterns?
A) All tidal patterns are the same worldwide.
B) Tidal patterns are not important for navigation.
C) Tidal patterns only change with the seasons.
D) Tidal patterns vary significantly by location.
  • 28. What is the 'Rule of Twelfths' used for?
A) Predicting the weather.
B) Estimating the approximate water level change during a tide.
C) Determining the location of fish.
D) Calculating the speed of a tidal current.
  • 29. What does 'stand' refer to in the context of tides?
A) The highest point of a high tide.
B) The lowest point of a low tide.
C) The time it takes for a tide to complete one cycle.
D) A period when the water level is nearly constant at high or low tide.
  • 30. How do coastal features like inlets and bays affect tidal currents?
A) They have no effect on tidal currents.
B) They slow down tidal currents.
C) They reverse the direction of tidal currents.
D) They can amplify tidal currents due to constriction of water flow.
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