chap 3 ocean Flashcards
(17 cards)
What kind of currents does the wind produce and how
Surface currents, they are formed when wind is pushing water in direction it is blowing
Compare and contrast surface currents and deep ocean currents
Surface are caused by winds and deep water currents are caused by difference in water density they both move
How does the Earths rotation influence currents
by making the wind blow in curved lines not straight lines
Why do upwellings often have a lot of sea life
because they carry organic sediment to the surface where they provide nourishment to zooplankton witch subtract other saltwater organisms
How do turbidity currents differ from surface and deep water and deep ocean currents
they are temporay and move sediments.
How are waves formed
wind blowing across the water of the open ocean
What causes waves to break
when the crest moves faster than the bottom this makes the crest fall forward and break into a foam
How do the particles of water move within a wave
somersaults
would you expect a wave to be larger with a fetch of 1km or 3km
3km because the larger the fetch the bigger the wave.
How are tides formed
when the moons gravity pulls most strongly on the side of earth facing the moon a bulge in the ocean called tides occur
Besides the moons gravity what also affects the Earths tides
The Suns Gravity, the earths rotation and the moons orbit
What causes extreme tides
when the moon, earth, and sun line up twice a month during this time the sun and moon pull together on the earths ocean the results are high tides that are very high and low tides that are very low.
Compare and contrast spring tides and neap tides
spring tides are high tides that are very high and low tides that are very low and neap tides are high tides that aren’t as high and low tides that aren’t as low.
what are the great rivers of water that move through ocean called
currents
What determines the speed and direction of an ocean surface current
the wind and the earths rotation
What rises organic matter from the ocean floor
upwelling
what is the distance wind blows over the open water
fetch
