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Oceans Review

Currents/Composition/Properties of water

QuestionAnswer
Why does ice float on water? Ice expands when it freezes causing less molecules per spa given space. This makes ice less dense than water.
What is the positive charge and negative charge elements of an H2O molecule? Negative charge ~ Oxygen Positive charge ~ Hydrogen
What is Polarity? It is a condition in which opposite ends of a molecule have slightly opposite charges, but the overall charge of the molecule is neutral.
How does sodium chloride (salt) dissolve in water? Positive charged sodium atoms are attracted to negative charged oxygen atoms and negative charged chlorine atoms are attracted to positive charged hydrogen atoms.
What is Cohesion? The attraction of molecules that are alike.
What is Adhesion? The attraction of molecules that are not alike.
The density of freshwater is ________ at 4 degrees Celsius. The density of freshwater is HIGHER at 4 degrees Celsius.
List the 5 ways in which water is a unique compound. 1.) high specific heat 2.) Only substance with solid, liquid, and gas phases 3.) The molecules have strong forces between them 4.) It expands when it freezes 5.) The solid form is less dense than the liquid form
What ocean is the largest and deepest? The Pacific Ocean
Name one difference between Seawater and Brackish Seawater is water directly from the ocean. Brackish water is a mix of seawater and fresh water.
What is Salinity? A measure of the mass of dissolved solids in a mass of water.
List the features, in order, of the ocean floor. Continental Margins Abyssal Plains Mid-Ocean Ridges Ocean Trenches
Name four criteria used when classifying ocean zones. Sunlight, Temperature, Density, and Salinity.
Name the three zones. Surface zone, Middle zone, and Deep zone.
List the three regions of the Continental Margins. Continental Shelf, Continental slope, and Continental Rise.
What is special about the Ocean Trenches? They are the deepest part of the ocean.
Define currents. A stream of sea water.
What causes ocean currents? Wind, gravity, and density.
What are the two types of currents? Surface current and deep currents.
What is a Gyre? A large circle made up of other currents steered by the continents.
How many Gyres are there? There are 5 Gryes.
Which current is responsible for the sinking of the Titanic? The labradore, located near Greenland.
Warm air holds ______ heat than warm water. Warm air holds LESS heat than warm water.
The flow of the currents in the northern and southern hemisphere are ______. The flow of the currents in the northern and southern hemisphere are OPPOSITE.
Created by: 304170
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