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Topography of the Ocean Floor
Waves
Tides
Ocean Water Chemistry
Potpourri
100
The shallow-water platform that slopes gently from a continent to the deep ocean bottom.
What is the continental shelf?
100
A wall of rocks or concrete built outward from a beach is called a _________________.
What is a groin?
100
The daily rise and fall of Earth’s water on its coastlines is called the _______________.
What is tide?
100
Two factors that affect density are________ and ________.
What are temperature and salinity?
100
The lowest point of a wave is called the ____________.
What is the trough?
200
The area of steeply sloping seafloor between the continental shelf and the deep ocean bottom.
What is the continental slope?
200
Waves are mostly caused by this.
What is wind?
200
Tides are caused by________________.
What is the gravitational pull of the moon?
200
This is the measure of dissolved chemicals in ocean water.
What is salinity?
200
The highest point of a wave is called_____________.
What is the crest?
300
This is the underwater mountain range that is the longest topographic feature on the earth’s solid surface; it covers all of Earth.
What is the mid-ocean ridge?
300
The horizontal distance between wave crests is the______________.
What is wavelength?
300
Describe the angles of the sun and moon during a spring tide and a neap tide.
What is straight line (spring) and right angle (neap)?
300
As salinity increases density__________________.
What is decreases?
300
True or false: High tides occur only once per day.
What is false? (They occur twice per day)
400
This is the flat, almost level area in the deepest part of ocean basin.
What is the abyssal plain?
400
What is the effect of wind on waves?
What is the stronger the wind, the larger the wave.
400
What is the difference between high and low tide?
What is during high tide water reaches its highest point, but at low tide it reaches its lowest point.
400
As temperature increases, density __________________.
What is decreases?
400
These are natural landforms that protect against erosion.
What are sand dunes and barrier beaches?
500
Differentiate between a seamount and a guyot.
What is seamounts are underwater volcanic mountains, whereas guyots are flat-topped, underwater mountains?
500
Imagine you are sitting on the beach, gazing at the ocean. You notice a gull bobbing up and down. You count ten waves that pass it by within ten minutes. What characteristic of waves can be described by this observation?
What is wave frequency (the number of waves that pass a certain point in a given amount of time)?
500
During a spring tide, this moon may be present.
What is new or full? (Neap tides occur at first quarter and third quarter moons).
500
The zone where there is a sharp diffeence between surface temperature and subsurface temperature.
What is thermocline?
500
The tide is considered the ___________________ of the ocean.
What is pulse?