Moon, Sun, and Earth Systems
Terms in this set (8)
What are tides caused by?
the moon and sun's gravitational pull
Which exerts stronger gravitational pull on earth, the sun or the moon?
the moon because it is closer
What happens when the moon faces one side of the earth?
the moons gravitational pull causes high tide on the sid of the earth facing the moon
What is a spring tide?
Highest high tide and lowest low tide
What position do the sun and moon have to be in to create a spring tide?
full or new moon
What is a neap tide?
It occurs at quarters ( 1st and 3rd) The moon and sun are pulling in different directions. This will be the lowest high tide and the highest low tide.
In most places on earth, how often do high and low tides occur?
twice a day for high and low tides due to the earths' rotation
How long does it take the moon to completely revolve around the earth?
28 days for 1 revolution and 1 rotation
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