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Stack #214344
Question | Answer |
---|---|
tide | periodic rising and falling of the water level of the ocean |
what causes tides? | gravitational pull of the moon and earth |
why does the moon's gravity effect us more than the sun's gravity? | the moon is closer |
about how many hours are there between high tides? | about 12 1/2 hours |
tidal range | difference in height between a high tide and the next low tide |
spring tide | when the sun, moon, and earth are directly aligned resulting in an extra-high tidal bulge and extra-low tidal dip |
neap tide | during first and third-quarter moons, sun and moon are not aligned with earth... results in less extreme high and low tides |
what's the difference between direct and indirect high tides? | direct high tides are closest to the moon, resulting from the most gravitational pull from the moon |