Terms
the two factors that affect ocean water density
temperature and salinity
which two forces cause the tides on earth?
moon and sun
the distance between trough and crest is called the _________.
wave height
Which hemisphere has more ocean?
Southern
A margin that has a continental slope that disappears abruptly into an oceanic trench is called an ________ margin.
active
a partially enclosed coastal body that is connected to the ocean
estuary
a spring tide occurs during which phases of the moon?
new and full
Define wave period
the time interval between the passage of successive crests at a stationary point
Which ocean is the deepest?
Pacific
The deepest part of the ocean is ______________ located in the southern end of the _____________ near the island of ____________.
Challenger Deep
Mariana Trench
Guam
the transport of sediment in a zigzag pattern
beach drift
The flowing out of the tide is called the ________
ebb current
the distance wind has travelled across open water is the ________
fetch
The coriolis effect deflects surface ocean currents to the right or left of their path of motion in the southern hemisphere?
left
Name the three major topographic units of the ocean floor
Continental margin, mid-ocean ridge, ocean basin floor
movements of ocean water caused by density differences brought about by variations in temperature and salinity
thermohaline circulation
A tide in which the range between high tide and low tide is minimal
neap tide
the process by which the portion of a wave in shallow water slows, causing the wave to bend
wave refraction
What drives surface ocean currents?
prevailing winds
a weathered seamount is called a ______
guyot
a marshy or muddy area that is covered and uncovered by the rise and fall of the tide
Tidal Flat
Explain why tides create a bulge opposite to the object generating the gravitational pull
The moon is pulling the water on the side facing the moon towards it, but it is also pulling the center of earth towards itself. This means that the earth moves slightly towards the moon, leaving a bulge of water on the opposite side of the earth, hence two tidal bulges.
The three factors that effect the height, length, and period of a wave are...
fetch
length of time the wind has blown
The dissolved materials in water come from what 3 sources?
weathering of rocks on the continents
outgassing from earth's interior
remnants of marine organisms
From the edge of the ocean to the centre, name the 6 topographical features of the ocean floor
continental shelf, slope, and rise; seamount; abyssal plain; Mid-ocean ridge/rift valley