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25 Cards in this Set
- Front
- Back
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The tide is the daily ____ of the ____ of ocean water. |
change level |
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High tide is the time of ____ water level, and low tide is the time of the ___ water level. |
high low |
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Neap tide is the ______ high tide and the _____ low tide of each month. |
lowest highest |
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Spring tide is the ______ high tide and the _____ low tide of each month.
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highest lowest |
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Most seashores have ____ tides every day. __ high tides and __ low tides. |
4 2 2 |
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Tides are caused by the pull of ____ by both the ____ and the ___. |
gravity moon sun |
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The ___ is more important in tides because it is closer than the ___.
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moon sun |
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The pull of the moon _____ the water on high tide. There is also high tide on the opposite side of the Earth- the side facing ___ from the moon. |
bulges away |
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Areas that ______ that water for high tide areas have low tides. |
supplied |
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The Earth is always rotating. As it turns, different parts face the _____. This causes the tides to keep _____. |
moon changing |
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A change of tide takes about __ hours and __ minutes. |
6 hours and 12 minutes |
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If you were a fisherman, at what tide would you unload your catch? (I don't really get this) |
Low tide |
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If you were a fisherman, at what tide would you go out to sea?
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High tide |
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The sun's (weaker) gravity helps provide 2 special kinds of tides ______ and _____. |
Spring and Neap |
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Spring tides happen 2 times a month, at ___ moon and ____ moon. |
new full |
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Spring tides produce low tides that are _____ than usual. |
lower |
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Neap tides happen twice a month also, but at _____ moons. |
quarter |
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Neap tides produce _____ tides. That is, tides that are not as ____ and not as ____ as usual. |
moderate high low |
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At the new moon and at the full moon, the sun, Earth and moon are in a ____. |
line |
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When the sun, Earth and moon are in a line, the pull of gravity upon the Earth becomes _______. |
stronger |
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When the sun, Earth and moon are in a line, high tides are _____ than usual and low tides are ____ than usual. This is called a _____ tide. |
higher lower Spring |
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At quarter moons, the moon and sun are at _____ _____. This causes a ___ tide. |
right angles Neap |
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When the moon and the sun are at right angles, the pull of the sun acts ______ the pull of the moon. |
against |
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When the sun and moon are at right angles, tides are _______. This is called a _____ tide, which happens __ times a month. |
moderate Neap 2 |
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