

Ocean Salinity and Density Concepts
Interactive Video
•
Chemistry, Science, Geography
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary composition of ocean salts?
Sodium and Chlorine
Potassium and Bromine
Calcium and Magnesium
Iron and Zinc
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process contributes to the salinity of the ocean from Earth's interior?
Photosynthesis
Volcanic eruptions
Sedimentation
Chemical weathering
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does evaporation affect ocean salinity?
It increases salinity by removing fresh water.
It decreases salinity by adding fresh water.
It decreases salinity by removing salt.
It has no effect on salinity.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to ocean salinity when sea ice forms?
Salinity remains unchanged.
Salinity increases as fresh water is removed.
Salinity decreases as salt is trapped in ice.
Salinity decreases as ice melts.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the thermocline?
A layer of high density.
A zone of rapid temperature change with depth.
A layer of constant temperature in the ocean.
A region of high salinity.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is there no thermocline at the poles?
The water is too shallow.
The water is too salty.
The water is uniformly cold from surface to bottom.
The water is too warm.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does salinity affect the density of ocean water?
Salinity has no effect on density.
Higher salinity increases density.
Lower salinity increases density.
Higher salinity decreases density.
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