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Physics of Water
n/a
19
Other
12th Grade
01/20/2010

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Term
what is heat?
Definition
Kinetic energy in the random movement of individual atoms and molecules in a substance.
Term
what is temperature?
Definition
measures how fast the molecules vibrate.
Term
2 common systems to measure temperature?
Definition
fahrenheit and celsius.
Term
which measurement is used most by scientists?
Definition
celsius.
Term
heat capacity?
Definition
amount of heat energy required to raise a given amount of a substance by a given temperature.
Term
what implications does heat capacity have on Earth's climate?
Definition
heat is carried to areas that would otherwise be cooler, and heat is absorbed in places that would otherwise by hotter.
Term
what unique characteristic does water have when it turns from vapor to liquid ice?
Definition
it becomes less dense.
Term
latent heat of fusion
Definition
non-sensible heat lost when water goes from liquid to solid state.
Term
sensible heat
Definition
that which you can sense with a thermometer.
Term
non-sensible heat
Definition
a change in heat energy that can't be sensed with a thermometer
Term
latent heat of vaporization
Definition
heat required to vaporize a substance.
Term
which takes more enery: evaporate or freeze?
Definition
evaporate because bonds are being broken.
Term
thermal inertia
Definition
tendency of water temperature to change.
Term
thermal equilibrium
Definition
water cools at about the same rate as it heats.
cooling rate=heating rate.
Term
what are the relationships between the salinity, temperature, and density of seawater?
Definition
temp and density are inversely proportional.
salinity and density are proportional.
Term
why are oceans stratified by density?
Definition
because dense water is heavy and sinks below less dense layers.
Term
what are the three density layers of the ocean?
Definition
surface zone
thermocline
deep zone
Term
what are the proportions?
Definition
surface zone: 2%
thermocline: 18 %
deep zone: 80%
Term
what is a thermocline?
Definition
separates the surface zone from the deep ocean.
area of change.
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