Tides
true or false. a solar day is longer than a lunar day
false
define spring tides
has a very high high tides and very low low tides
define neap tides
has a very low tidal range
tidal bulges are located at the ___ and ________
nadir and zenith
how often does a blue moon occur
once every few years
explain how tidal bulge propagates around the earth during a lunar month
Tidal bulges are pulled by forces caused by the moon. As a result the tidal bulges move across earth's oceans to keep up with the tidal force of the moon.
explain why high tides and low tides are different heights
when tidal bulges hit wide margins, the height of the tide can be magnified
how often do spring tides occur?
twice a month, during new or full moons
how many times do high tides and low tides occur per lunar day
two high, two low
the full moon is followed by the ______ and _____ phases of the lunar cycle
waning, gibbous
in one solar day, how far does the moon move around the earth?
1/28th of a complete revolution
how often do neap tides occur?
1/4 moons twice a month
what is the duration of solar day?
24 hours
how long is a lunar day
24 hours and 50 minutes in duration
the new moon is followed by the ____ and _____ phases of the lunar cycle
waxing and cresent
define proxigean tides
are spring and perigee tides
explain why individuals in different locations on earth may experience 1 high tide and 1 low tide; 2 high tides and 2 low tides
because the earth rotates through two tidal bulges every lunar day, coastal areas experience 2 high and 2 low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart. Semidiurnal tides is a cycle that creates 2 high and 2 low tides every lunar day. the diurnal tide cycle creates 1 high and 1 low tide each lunar day along the east coast. Mixed tidal cycle creates high and low tides with different heights along the west coast. we experience different types of cycles because continents block the passage of the tidal bulges as the earth rotates
the moon's influence on earth's tides are greater than the ___
sun
define zenith
the gravitational force exerted on earth by the moon is greatest
what is the most important factor that causes ocean tides on earth is_______
the moon
define tidal bulges
the pull between the moon and earth that causes ocean waters to be pulled towards the moon
define tides
the rise and fall of sea level caused by graitational attraction of the moon and sun
define tidal range
the vertical difference between consecutive high and low tides
define nadir
the weakest gravitational force on earth by the moon
TIDES
tides are the regular rise and fall of the sea level. tidal bulges are the forces between the moon and earth that pull ocean waters towards the moon. There are two types of tidal bulges, nadir and zenith. Zenith is the strong force that is closest to the moon and the nadir is the weak force that is furthest from the moon. Because the moon is closer to earth it exerts more force than the sun. High and low tides are created as the earth constantly rotates tidal bulges. The monthly tidal cycle is 29 and a half days because that's how long it takes the moon to orbit around the earth. A lunar day is 24 hours and 50 minutes because the moon has to catch up with the earth's rotation. High tides occur every 12 hours and 25 minutes because they depend on the lunar day. A solar day is 24 hours long because that's how long it take the earth to make a full rotation around the sun.