Q&A science test 2
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| when can you see Earth's umbra? | during a solar eclipse
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| what causes tides? | the sun and the moon pulling on water
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| why does the moon cause two tidal bulges? | the moon's gravitational force and inertias (resistance)
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| spring tide vs neap tide? | spring tide- moon, sun and earth align in straight lines and tides have biggest contrast of highest to lowest. occurs during full and new moons
neap- sun and earth line up in right angles. happened during first quarter moon and third quarter
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| how many times a month is there a neap tide? | two
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| how many times a month is there a spring tide? | two
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| how many high tides a day? | two
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| how many low tides a day? | two
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| what kind of tide is created when there's the biggest contrast of high and low tides? | spring
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| what kind of tide is it when there's low contrast between high and low tide? | neap
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| when water flows toward the far side of Earth it creates a high or low tide? | high
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| does it matter which way the sun, Earth and moon line up when a spring tide occurs? | no. as long as they are all lined up in a row the spring tide will occur and highest tide will have big contrast with lowest tide
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| what kind of tide occurs when sun is at right angles with Earth and moon? | neap
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| what do the differences in the moon's and sun's pull on different sides of the Earth cause? | tides
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| what kind of tide occurs when sun, Earth and moon are in a line? | spring
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| when water flows toward the high tides, it cause what kind of tide halfway between them? | low
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| approximately hour many hours is a tides cycle of rising and falling ocean water? why is it a little over then one day? (1 hour over) | 12.5 hours
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| what kind of moons produce spring tides? | new moons and full moons
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| what kind of moons produce neap tides? | first quarter moons and third quarter moons
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| does the sun's gravity affect tides? | yes
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| what do changes in position of Earth, sun and moon cause? | the kind of tides that occur. spring and neap tides depend on positions of Earth,sun and moon.
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| what mainly causes tides to happen? | the moon and sun pulling on the Earth causes tides to happen.
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