Moon+and+tides+Jenny+and+Brendan,+orange

=**MOON AND TIDES**= = = =What are tides?= =How does the moon affect the tides?= =Direct and Indirect Tides= = = =Rise and Fall of Tides= =Spring and Neap Tides= =Tide Basics= =Tide Vocabulary= =Other Factor's Affecting Tides= =Moon Phases and Tide changes=
 * //**Tides-**// regular rise and fall of the ocean suface
 * Caused by the gravitational pull of moon. The pull of sun is added or subtracted from that of the moon
 * Moon's gravitational pull is main effect of tides[[image:earthtides.gif align="right"]]
 * Secondary source of is the sun
 * Pulls water towards it and on opposite side of globe pulls land towards it
 * As moon phases change so do tides
 * When part of globe is facing the moon forcing extreme high and low tides creating //**direct tides**//
 * Earth is pulled away from the water on the far side, leaving a buldge of water behind creating **//indirect tides.//**
 * All parts of ocean pass under moon in 24 hrs. 50minutes
 * 1/4 of that time 6 hrs. 12.5 minutes- the tides change
 * High tides progressively move into low tides.
 * Cycle begins every day, around 50 minutes later
 * Tides can be irregular due to, shapes of ocean basin, and ocean floors[[image:tide06a_450.gif align="right"]]
 * //**Spring tides-**//high tides very high and low tides very low, occuring twice a month
 * //**Neap tides**//- high tides are low, and low tides are high
 * New moon and full moon phases result in spring
 * Quarter phases, sun opposing moon result in neap tides.
 * When moon at perigee greater tidal effects.
 * Typically four tides per day( two high, two low)
 * Highs occur directly under the moon
 * Oposite moon next high tide
 * Low tides, 90 degree of moon, earth and Boston
 * Tidal day- Time is takes for 2 high/ 2 low tides to occur
 * Tidal period- Time between consecutive high and low tides
 * Tidal range- Difference in water height between consecutive high and low tides
 * Diurnal - one cycle of tides during one of Earth's rotation
 * Semidiurnal - 2 cycles of tides per day
 * Mixed - intermidiate between the two, two unequal highs and lows during tidal day
 * Weather
 * Earth's Rotation
 * Location on earth
 * Coastline drop off
 * Big drop- dramatc tides
 * coastline configuration
 * As the moon phases change so do the way tides act
 * The closer the moon is to a landmark phase (1/4, half, 3/4 and full) the more drastic tides are

Gaging the Moon and Tide Lab = = BY: Brendan Brooks, Jenny Proctor orange class
 * taken from textbook pg: 449
 * Oceanography** notes 3/26/07, 3/27/07