Science 3 Flashcards
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What are the names of Earth’s oceans
Pacific, Atlantic, Indian, arctic, southern
What are all of the elements present in the ocean, besides hydrogen and oxygen?
chlorine (55%) sodium (31%) (salt) magnesium, (7.7) sulfur (3.7) calcium (1.2%)
What causes surface currents
It is driven by Surface winds pressure differences and the sun
What is the Coriolis Effect and how does it affect Earth
It is the deflection of moving objects from a straight path due to earth’s rotations it makes surface winds curve
How are oceanic and continental crust different
Oceanic more dense but bigger continental is smaller but less dense
How are density and salinity related
Density is affected by salinity more salt more dense less salt less dense
How are density and temperature related
Temp determines density
What is the sun’s role in heating the oceans
Much of the sun’s radiation is absorbed into the ocean the oceans help distribute this heat around the world
How are humans dependent on the oceans
It supplies us with water, oxygen, jobs, fish, fish oils, And affects our weather patterns
What pollutes the ocean
80% of the pollution comes from land/runoff
How do surface currents move
They are mainly moved by surface winds
What are convection currents
The circular movement of fluid in Earth’s mantle
