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Q 1/40
Score 0
What is the average salinity of seawater?
45
35 parts per thousand
25 parts per thousand
31 parts per thousand
55 parts per thousand
Q 2/40
Score 0
What affects the density of seawater?
45
Salinity
40 questions
Q.
What is the average salinity of seawater?
1
45 sec
Q.
What affects the density of seawater?
2
45 sec
Q.
How does evaporation of ocean water raise the density of nearby water?
3
45 sec
Q.
Deep sea currents are driven by what property?
4
45 sec
Q.
Tide that occurs just after first and third quarter moon phases.
5
45 sec
Q.
What happens to temperature and density in the thermocline?
6
45 sec
Q.
The Gulf Stream moves up along the eastern coast of the U.S., what type of current is it?
7
45 sec
Q.
A cone of depression occurs in what structure when water is used more than its recharge?
8
45 sec
Q.
What general direction do cold surface currents flow?
9
45 sec
Q.
Which of the following choices correctly shows the Earth’s fresh water reservoirs from greatest to least in terms of volume of water?
10
45 sec
Q.
What is the major difference between porosity and permeability?
11
45 sec
Q.
In the saturated zone, pore spaces within rock or sediment can hold what?
12
45 sec
Q.
How many river basin make-up North Carolina River Basin systems?
13
45 sec
Q.
Most of the world’s freshwater is trapped where?
14
45 sec
Q.
Water that lies on the surface of the Earth like streams, river, and lakes are considered what?
15
45 sec
Q.
The unending circulation of Earth’s water supply is known as what?
16
45 sec
Q.
How is the balance of heat energy maintained in the oceans?
17
45 sec
Q.
How would several wells in a given area affect the balance of groundwater recharge and discharge?
18
45 sec
Q.
Nonpoint pollution is hard to control because_____.
19
45 sec
Q.
Most nonpoint pollution comes from_______.
20
45 sec
Q.
Precipitation that falls on Earth’s surface _________.
21
45 sec
Q.
Humans use freshwater primarily for_________.
22
45 sec
Q.
Which of the following best describes floodplains?
23
45 sec
Q.
Which of the following will contribute to water conservation?
24
45 sec
Q.
Which can cause eutrophication?
25
45 sec
Q.
Which step in the drinking water treatment is described below?
The heavy particles settle to the bottom and clear water moves on.
26
45 sec
Q.
Which agency is responsible for monitoring water quality?
27
45 sec
Q.
What is a movement of water that parallels the shore within the surf zone.
28
45 sec
Q.
A string of islands that run parallel to a coastline.
29
45 sec
Q.
Which best explains how estuaries support plant and animal life?
30
45 sec
Q.
Sonar works by transmitting sound waves and measuring the time it takes the sound waves to transmit back. What can be learned by using sound waves in the ocean?
31
45 sec
Q.
How does Ocean Acidification affect our oceans?
32
45 sec
Q.
How do oceanic upwellings promote the growth of microscopic plankton?
33
45 sec
Q.
If the water has high turbidity it means that the water is/has ______.
34
45 sec
Q.
What is the first step in waste-water treatment?
35
45 sec
Q.
What happens inside of an aquifer?
36
45 sec
Q.
Point source pollution comes from ________.
37
45 sec
Q.
Where is the largest percentage of Earth’s freshwater located?
38
45 sec
Q.
What human activity uses the most water worldwide?
