Test Review: Water and Seawater
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TEST REVIEW Water and Seawater
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Transcript of Test Review: Water and Seawater
TEST REVIEWWater and Seawater
Can Polar oceans completely freeze?No
What is the density of water?1 g/cm3
Why do you put salt on icy roads or sidewalks?It lowers the freezing point of water.
What is the percentage of freshwater readily available?Less than 1%.
What do hydrogen bonds account for?Acts as a solventHas high surface tensionHigh boiling pointHigh heat capacity
Why can insects walk on water?Surface tension
The ocean is slow to heat and slow to cool. Why?High heat capacity
How is the ocean layered?DensityTemperaturesalinity
True or False?Increasing
heat is an object’s response to an increase in temperature.
False. This is called “latent” heat.
Which wavelengths of light can penetrate the deepest into the ocean?
Green and blue.
What determines density of seawater?Salinity and temperature
What determines a zone of the ocean’s salinity rapidly changing?pycnocline
What is the percentage of incoming sunlight absorbed by the land and water?
51%
What is the main carrier of heat between the warm tropics and cold polar regions?The atmosphere.
Is the speed on sound in water slower or faster than the speed on sound in air?
faster
What is the average salinity of seawater?34 ppt.
What are the 2 most abundant elements dissolved in seawater?SodiumChloride
Acid – high or low value?Low
What is a solution made of?Ionatom
Water Cycle
