L5 Flashcards
what are tides?
the periodic rise and fall of the level of water in the ocean
About how often does high and low tide occur?
about every 12.5 hours
What are tides caused by?
differences in how much gravity from the moon and the sun pulls on different parts of earth
What affects the heights of tides during a month
changes in the positions of Earth the moon and the sun
When do spring tides occur
during a new and full moon
The gravity of the sun and moon pull in the same direction during a ______ tide.
spring
When do neap tides occur?
during a 1st and a 3rd quarter moon
the gravity of the suns pull is a a right angle to the moons pull in a ______ tide
neap
what is a neap tide?
a tide with the least difference between consecutive low and high tides is called a neap tide
