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- 1. Multiple Choice
How many feet down in depth before you get 1 atmospheric pressure (the weight of the atmosphere)?
20ft
33ft
65ft
100ft
- 2. Multiple Choice
What is the average salt content of the ocean?
10ppt
15ppt
27ppt
35ppt
- 3. Multiple Choice
Which of these constituents do NOT makeup the salinity of the ocean?
Fluorine
Sodium
Chloride
Magnesium
- 4. Multiple Choice
Refractometer is used to measure . . .
density of water
temperature of water
clarity of water
salinity of water
- 5. Multiple Choice
75% of the ocean is in this range of temperature
30 - 43 degrees
70 - 83 degrees
50 - 62 degrees
43 - 55 degrees
- 6. Multiple Choice
The pycnocline is the layer where . . .
density decreases rapidly
salinity decreases rapidly
density increases rapidly
salinity increases rapidly
- 7. Multiple Choice
How fast does sound travel through water?
750m per second
1200m per second
1450m per second
2000m per second
- 8. Multiple Choice
What is the last color to be absorbed by water when light is passing through the ocean?
blue
red
yellow
green
- 9. Multiple Choice
What is unique about sound trapped in the SOFAR layer?
sound can travel far distances because it is stuck in a channel.
sound cannot pass through this layer of the ocean
sound loses speed when it hits this layer and dissipates
sound speeds up and refracts back to the object creating the sound
- 10. Multiple Choice
How far does sunlight travel through the ocean?
50ft
100ft
250ft
330ft
- 11. Multiple Choice
What property of water allows for bugs to walk on water?
surface tension
thermal bonding
cohesion
adhesion
- 12. Multiple Choice
What property causes water to move up on the sides of a glass such as a meniscus?
cohesion
adhesion
surface tension
thermal bonding
- 13. Multiple Choice
Water likes to "stick to itself" much like a droplet. What property of water is this called?
adhesion
cohesion
surface tension
high heat capacity
- 14. Multiple Choice
What happens to water when it freezes?
Water's volume shrinks 10%
Water volume stays the same
Water expands 10% of its volume.
Ice sinks when it becomes a solid.
- 15. Multiple Choice
Why is water used to clean things?
Water hydrogen bonds separates positive and negative ions.
Water mixes well with ionic solutions.
Water's cohesive forces pulls apart other ions.
Water's adhesive properties enhances the detergents use for cleaning.
- 16. Multiple Choice
If a solution has more OH ions than H+ ions, then the solution is . . .
basic
acidic
neutral
distilled
- 17. Multiple Choice
CO2 absorbed in the ocean is . . .
making it more basic
making it more acidic
changing the pH higher
None of the answers are right.
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