OCNG exam 2 - Flashcards
22 Cards in this Set
| Front | Back |
|---|---|
|
calorie
|
the amount of energy that must be added to one gram of liquid water to raise its temperature by one degree Centigrade is called?
|
|
its ability to form hydrogen bonds
|
which accounts for the unusual properties of water?
|
|
3.5%
|
dissolved substances comprise about what % of seawater?
|
|
it remains constant until the ice melts; then it begins to rise
|
a beaker contains a mixture of ice and pure water at 0 degrees. What happens to the temperature of the mixture as heat is added?
|
|
electron sharing
|
Covalent bonds form between hydrogen and oxygen atoms in a water molecule because of?
|
|
higher than
|
The heat capacity of water is ________ most other liquids.
|
|
high boiling point of water, lower density of ice as compared to liquid water, and very high heat of evaporation of water
|
Hydrogen bonding is largely
|
|
gold
|
which element is not one of the ten most abundant elements in seawater?
|
|
cools the surface water and leaves the salts behind
|
when water evaporates from the ocean, it _____.
|
|
4
|
in freshwater lakes, the surface water stops sinking when it passes ____ degrees Celsius.
|
|
540 calories/gm
|
the heat of vaporization of pure liquid water is ______.
|
|
iron
|
this element is a trace element.
|
|
about 1 degree Centigrade
|
the temperature of the surface waters of the open ocean vary in what way over a 24 hour period?
|
|
FALSE
|
true or false: the process of photosynthesis uses up oxygen.
|
|
more oxygen and carbon dioxide are present in the oceans relative to nitrogen than in the atmosphere
|
the same major gases that are found in the atmosphere are also found in the oceans. Which of the following statements is true?
|
|
dissolved substances necessary for plant growth
|
Nutrients are ______.
|
|
7.4 - 8.4
|
the pH range in the ocean is roughly _____.
|
|
10
|
of all the water that evaporates over the oceans, only about ___% falls on land masses.
|
|
its high latitude origin
|
the relatively high concentration of dissolved oxygen in the deeper layers of the ocean at the equator is mainly due to ______.
|
|
rivers and volcanic activity along spreading centers
|
dissolved substances in the ocean enter from two major sources. These are ______.
|
|
carbon dioxide and water vapor
|
absorption of outgoing radiation from earth is strongly affected by _____ in our atmosphere.
|
|
100 years
|
the residence time of carbon dioxide in the atmosphere is _____.
|
Study Guide: Exam 4