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Ocean study stack

Oceans

QuestionAnswer
What are 5 of the Earths oceans? Pacific, Atlantic, Indian, Artic, and Southern.
What are two sources of water for Earths oceans? Water Vapor expelled from volcanoes that condensed, rain and melted ice from comets and asteroids.
How does water in Earths oceans become salty? The water millions of years ago dissolved the minerals of rock. The minerals contained substances that formed salts, than rivers and streams carry it to the oceans.
What is salinity? Salinity is a measure of mass of dissolved solids in a mass of water.
What are 3 regions of the continental margins? Continental shelf, continental slope and the continental rise.
What are the 2 types of resources from the seafloor? Energy resources and minerals.
What are 4 criteria scientists use when classifying ocean zones? The amount of sunlight, the temperature, the salinity and the density.
What are the 3 ocean zones? Surface zone, Middle zone and the deep zone.
Which is one of the ways that water is a unique compound? It has a high specific heat, it exists in all forms naturally, water forms drops when it splits, ice can float, and some substances dissolves in water.
What is cohesion? the attraction among molecules that are alike.
What is adhesion? the attraction among molecules that are not alike.
How does the ice make it possible for organisms to live in the lake in the winter? It keeps the warm air in the lake so the organisms don't freeze.
why does ice only stay on the surface of the water without sinking to the bottom? Because ice isn't denser than the water.
Why is water sometimes called the universal solvent? Because it can break up natural substances like NaCl.
What do 2 hydrogen particles and one oxygen particle make? H2O which is water.
True or false- The density of ice is lower than the density of the same volume of liquid water? True.
What is a gyre? A gyre is a circular system of currents.
Which way do each of the hemispheres curve due to the coriolis effect? The northern hemisphere curves right in a clockwise direction and the southern hemisphere curves left in a counter clockwise direction.
What is an ocean current? An ocean current is a large volume of water flowing in a certain direction.
What is a benefit of an upwelling? It brings cold nutrient water from the ocean and it supports large populations of organisms.
What causes a density current? The changes in density.
What are the 3 different types of currents? Surface currents, upwelling currents and density currents.
What current moves water horizontally? Surface currents.
True or false- Only 2 of the 3 currents move water from place to place. False- All 3 currents move water from place to place.
Created by: Alonzo25
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