tides - the daily rising and falling levels of the oceans and other large bodies of water , what causes tides - the gravitational pull of the moon and sun, high tide - a bulge of water that forms at the 2 places on Earth that are closest to and farthest from the moon, Spring Tides - large tides that occur when the pull of the moon's gravity and the pull of the sun's gravity reinforce each other., Neap Tides - small tides that occur when the pull of the sun works in opposition to the pull of the moon , Things that affect tides - the moon, the sun, Earth's rotation, When does a Spring Tide occur? - during a full moon and a new moon, When does a Neap Tide occur? - during a first quarter and a third-quarter moon,

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