A partially enclosed water body where freshwater and saltwater mix

What is coral bleaching?

They expel algae living in their tissues, causing the coral to turn white

What is the benthic zone?

The lowest ecological zone in a water body

Why is the Sperm Whale called that?

Because of the waxy substance called spermaceti found in their heads

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Oceanography

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Questions 19

Answers

1
How deep is the Mariana Trench?
8,400 Meters
11,034 Meters
10,935 Meters
11,034 Feet
2
Does the ocean's salinity increase the deeper you go?
Yes
No
3
Since Lionfish have a rapid reproduction rate and are destroying coral reefs, what are they classified as?
Apex Predator
Invasive Species
Abiotic Factor
Non-native Species
4
Which zone of the ocean has almost no light, bioluminescence starts to show, and extends from 200-1000 meters?
Hadopelagic Zone
Mesopelagic Zone
Bathypelagic Zone
Continental Slope
5
What is a estuary?
Small areas of the ocean where the water's salinity is much higher
A large rock formation that sticks out of the water, forming a small island
A partially enclosed water body where freshwater and saltwater mix
Areas where plantlife thrives much more than other marine organisms
6
What is coral bleaching?
When coral is exposed to contaminated water, the coral loses their pigment
They expel algae living in their tissues, causing the coral to turn white
A chemical process when the coral's outer layer sheds off due to maturity
It is the loss of pigment after the coral dies
7
How is an Oxygen Minimum Zone (OMZ) created?
Microbial respiration
Increase in dissolved oxygen
Asphyxiation
Increase in water circulation
8
Which zone of the ocean is located on the ocean floor and extends from 4,000-6,000 meters?
Hadopelagic Zone
Abyssopelagic Zone
The Seafloor
Mesopelagic Zone
9
Mantis Shrimp have the strongest punch of any creature in the animal kingdom.
True
False
10
What is the benthic zone?
The top of an underwater trench
Connections between two different water bodies
An underwater division that harbors many thermal vents
The lowest ecological zone in a water body
11
Which zone of the ocean is only in trenches, harbors rarely any life, and extends from around 6-11 kilometers?
Dead Zone
Hadopelagic Zone
Benthic Zone
Mesopelagic Zone
12
What was the largest giant squid ever recorded?
10 Meters
18 Meters
14 Meters
8 Meters
13
Which zone of the ocean has bioluminescence as the only light, and extends from 1000-4000 meters?
Anoxic Zone
Abyssopelagic Zone
Photic Zone
Bathypelagic Zone
14
Which phylum is the barnacle in?
Arthropoda
Echinodermata
Mollusca
Cnidaria
15
Why are coral reefs so vital for the ecosystem?
All of the above
They help moderate temperature by removing CO2 from the atmosphere
About 25% of sealife depend on coral reefs
They protect coastlines from storms and erosion
16
Which zone of the ocean harbors the most life and extends from the surface to 200 meters?
Bathypelagic Zone
Aphotic Zone
Abyssopelagic Zone
Epipelagic Zone
17
What is the main food source for animals in the deep ocean?
Detritus (Marine Snow)
There is none (must rise up to shallower areas to obtain food)
Bacteria
Other animals
18
Why is the Sperm Whale called that?
Because of the waxy substance called spermaceti found in their heads
There is no reason to why it is called that
Because of the large sac found near the whale's reproductive area
Because of the extremely high reproduction rates
19
What squid is this?
Mesonychoteuthis hamiltoni
Dosidicus gigas
Architeuthis dux
Magnapinna

Oceanography Flashcards | StudBud