produce tides Gravitational pull of the moon and sun Centripetal force of the rotating Earth Tides are generated by Tides are generated by the gravitational pull of the moon and sun ID: 805873
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Slide1
Tides
Slide2Gravitational forces between two objectsproduce tides
Slide3Gravitational pull of the moon and sunCentripetal force of the rotating Earth
Tides are generated by:
Slide4Slide5Tides are generated by:
the
gravitational pull
of the
moon
and
sun
- moon has 2x greater gravitational pull than the
sun
- sun is 10 million x more massive than the
moon and is 390 times farther away
Slide6CENTRIPETAL
GRAVITATIONAL FORCE
GRAVITATIONAL & CENTRIPETAL
Slide7High water:
a water level maximum ("high tide")
Low water:
a water level minimum ("low tide")
Tidal range:
the difference between high and low tide
Spring Tide:
full moon and new moon (14.77 days)
Neap Tide
: 1
st
quarter and 3
rd
quarter (14.77 days)
Description of tides
Intertidal zone
High tide
Low tide
Slide8Slide9The monthly tidal cycle(29½ days)
About every 7 days, Earth alternates between:
Spring tide
Alignment of Earth-Moon-Sun system (syzygy)
Lunar and solar bulges constructively interfere
Large tidal range
Neap tide
Earth-Moon-Sun system at right angles (quadrature)
Lunar and solar bulges destructively interfere
Small tidal range
Slide10Synodic PeriodA synodic period is also known as the time it takes for the moon to change from one high tide to
another high tide
.
Slide11Slide12Slide13Earth-Moon-Sun positions and the monthly tidal cycle
Spring Tide
Highest high tide and lowest low tide
Neap Tide
Moderate tidal range
Slide14Slide15