In the 1960's the Navy built a deep-cean vehicle named the Alvin. How many meters deep can it go?
What is 4000.
100
If the oceans were to evaporate, the salt left behind would form a layer how thick?
What is 45 m or 150 ft thick over the entire seafloor.
100
Name the three ocean light zones.
What is sunlit (euphotic), twilight (disphotic), and midnight (aphotic) zone.
100
Name the three groups all life in the ocean is divided into.
What is plankton, nekton, and benthos.
100
Around what percent of the Earth's surface is covered by oceans?
What is 70%.
200
True or False: The ocean is bottomless.
What is false.
200
What is salinity?
Salinity is the measure of saltiness or the amount of dissolved salts water contains.
200
What zone is the top layer and nearest the surface of the ocean?
What is the sunlit or euphotic zone.
200
We know many animals rely on plankton for there existence. What is plankton?
What is all of the creatures in the sea that drift and float and rely on the tides to move them from place to place.
200
The Pacific Ocean's name has an original meaning of?
What is "peaceful sea."
300
What are valleys in the ocean called?
What is deep-sea trenches.
300
What is sea salt largely made up of?
What is chloride, sodium, sulfate, magnesium, calcium, potassium, and bicarbonate ions.
300
Name three animals that live in the twilight or disphotic zone.
What is lantern fish, rattalk fish, hatchet fish, viperfish, and the mid-water jellyfish.
300
Give two examples of animals that are considered to be nekton.
What is 20,000 different fish, sharks, sailfish, eel, etc.
300
HOw many different islands does the Pacific Ocean contain?
What is around 25,000.
400
What is the nickname for geothermal vents, found on the ocean floor that spit out very hot water and minerals?
What is "smokers."
400
Salinity is determined by measuring what two things?
What is the water's density and light refraction.
400
Most of the ocean falls in what zone?
What is the midnight or aphotic zone.
400
Where do benthos animal live? Give two examples animals that might live there.
What is sea snails, clams, sponges, sea lilies, and starfish.
400
During winter, what ocean is almost completely covered in sea ice?
What is the Arctic Ocean.
500
What is the deepest area of the ocean?
What is the abyss.
500
Explain why or why not the ocean is getting saltier as time goes on.
What is the average salinity of the ocean has not changed over time. What's being added is also being removed at the same rate. Also, some salt is used to form the body parts of marine organisms.
500
What is the connection between photosynthesis and the sunlit zone?
What is in this zone there is enough light penetrating the water to support photosynthesis. Because of this more than 90% of all marine life lives in the sunlit zone.
500
Describe what you think the ocean food chain looks like.
What is answers may vary. Mrs. Bartrom decides!
500
How are ocean tides caused?
What is ocean tides are caused by the Earth rotating while the Moon and Sun's gravitational pull acts on ocean water.