| 11. | Neap tides are the lowest high tides and highest low tides, marking the first and third quarters .)
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| 12. | Neap tides, on the other hand, are those in which the water rises and falls the least.
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| 13. | At Philips Point spring tides rise 25 to 30 feet, and neap tides from 16 to 20 feet.
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| 14. | Spawning takes place between June and October, at night at two-weekly intervals coinciding with neap tides.
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| 15. | Because the tidal speed doubles, eight times more tidal power can be produced at spring tides than at neap tides.
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| 16. | The semimonthly markings created by spring and neap tides are prominent and easier to identify and count than the daily tidal marks.
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| 17. | At neap tides, this interaction is less pronounced, without tides surges would occur more randomly, approximately every 12 hours.
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| 18. | This latter approach had caused problems at spring tides, although on neap tides Giant's Grave still had to be used.
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| 19. | An arrow on the tidal chart indicates the direction and the average flow speed ( usually in knots ) for spring and neap tides.
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| 20. | When the sun is at right angles to the moon, the effects are partially cancelled, producing the small tides called neap tides.
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