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WorksheetsOceans Study Guide
Total questions: 44
Worksheet time: 22mins
Why is ocean water more dense than fresh water?
salinity
warmness
pH
turbidity
A smooth, flat region of the ocean floor is called?
ocean trench
seamount
abyssal plain
open ocean
Free-swimming animals that can move throughout the water column are called?
benthos
neretic
nekton
plankton
Examples of nekton include
zooplankton, phytoplanton
dolphin, tuna
crab, Angler fish
An area where rivers flow into the ocean and mix fresh and salt water is a(n)?
ocean
estuary
tributary
bog
Deep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source?
thermal heat
electrical charge
hydropower
chemosynthesis
In which category of marine organisms do sharks, tuna, whales, and squid belong?
nekton
plankton
benthos
zooplankton
What technology uses sound waves to measure the depth of the ocean?
NOAA
SONAR
SCUBA
EPA
Which best explains why inhabitants of an estuary must adapt to frequent environmental changes?
Estuaries receive little sunlight.
The salinity of the water is constantly changing.
The water temperature is constantly warm.
Low levels of oxygen are absorbed by the water.
What are the 3 most abundant dissolved gases are found in the ocean?
Oxygen,Carbon Dioxide and Hydrogen
Oxygen, Carbon Dioxide and Nitrogen
Oxygen, Nitrogen and Sulfur
Nitrogen, Sulfur and Hydrogen
What happens as you go down the water column?
Temperature increases, pressure increases,light increases
Temperature decreases, pressure inreases, light increases
Temperature decreases, pressure increases, light increases
Temperature decreases, pressure increases, light decreases
Humans cannot easily study the ocean floor because it
The temperature is too high and it's too dark
The temperature is too low and it's too dark
The temperature is too low and it's too light
The temperature is too high and it's too lihgt
A gently sloping area that extends out to the edge of the continent?
Continental drift
intertidal zone
open ocean
continental shelf
The continuous chain of under water mountains?
seamounts
ocean trench
mid ocean ridge
continental shelf
If you were standing on the beach and were to walk out into the ocean, which ocean zone
would you first enter?Another name is splash zone.
Intertidal zone
neretic zone
open ocean
deep zone
An underwater mountain is known as a SEA MOUNT when it comes out and breaks the waters
surface it is called
ridge
shelf
mountain
volcanic island
How do scientists classify marine organisms?
Plankton, fresh, cold
plankton, nekton, neretic
Plankton, nekton, benthic
fresh, salt, warm
In a coastal inlet or bay where fresh water mixes with salt water, this type of water is
fresh
salt
brackish
polluted
Which best explains the importance of estuaries?
Estuaries are areas where freshwater and salt water collide, resulting in a large amount of biodiversity.
Estuaries are freshwater areas that support a large amount of living things.
Estuaries are tropical areas that support an abundance of life found usually in cold regions of the ocean.
Estuaries are nutrient-rich areas because they have large amounts of carbon dioxide seeping into the water from ground water.
The farming of saltwater and freshwater organisms is called
farming
aquaculture
SCUBA
NOAA
An example of an ocean biotic factor is _____ and an abiotic factor is ________.
sand, oil
dolphin, sand
water, cod
whale, dolphin
A deep canyon in the ocean floor is called a(an)
trench
seamount
abyss
plaini
Coral reefs are located in__________ and must be at ______ degrees to be kept alive.
deep cold water/ 60
shallow warm water / 88
shallow warm water/68
deep cold water / 58
What organism is the base for most all ocean food webs?
Whales
Sharks
Jellyfish
Plankton
Animal plankton are called ____________ Plant plankton are called ____________
zooplankton/phytoplankton
phytoplankton/zooplankton
diatoms/ zooplankton
rotifers/ zooplankton
When plates come together or collide that is called?
divergence
transference
convergence
mounting
When plates divide it is called divergent, what happens here? It happens at mid oceanic ridges.
Volcanoes
Sea floor spreading
continental shelving
continental drift
What are the 5 major oceans?
Pacific, Atlantic, Southern, Indian, Pomeranian
Pacific, Atlantic, Southern, Indian, Artic
Erie, Northern, Southern, Indian, Pomeranian
Pacific, Eastern, Southern, Indian, Northern
. Organisms that produce their own light are known as being _____________ An
example is the Angler fish.
invisible
glowing
bioluminescent
artificial
What is a methane cold seep?
Methane gas and water molecule crystallize in the ocean floor
Carbon dioxide seeps into surface zone
Oxygen seeps into transition zone
Methane seeps into ocean
What are two ecosystems located in the Neritic zone?
Kelp forest and Coral reefs
Kelp forest and estuaries
Coral reefs and methane seep
Coral reefs and estuaries
How is SONAR used to map the surface of the ocean floor?
Light waves are used to take pictures of the ocean floor.
Various temperatures are measured to determine the depth of the ocean floor.
Scuba divers take videos and photographs to document their trips to the ocean floor.
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
Why is productivity greatest near the ocean's surface?
More predators live in the top layers of the ocean.
Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there.
Salinity at all layers of the open ocean is fairly consistent.
Nutrients, minerals, and gases are more available to marine life in the bottom layers of the ocean.
Which is the main source of dissolved oxygen in a body of water?*
erosion
the atmosphere
volcanic eruptions
fish
Which best explains why the diversity and productivity of marine ecosystems is important to the survival of terrestrial organisms?
Marine habitats provide humans with a rich source of food and income.
Marine habitats provide protection to coastlines and help prevent erosion.
Marine habitats host species that comprise the base of the marine food web.
Marine habitats support species that serve as animal food and fertilizers for crops.
Deep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source ?
chemosynthesis
electrical charge
hydropower
thermal heat
Which property must submersibles and ROVs (remotely operated vehicles) share?
They should be able to emerge quickly
They must be able to transport sever scuba divers.
They should be able to employ robotic arms.
They must be able to withstand extreme water pressures.
Which best explains the effects of a hurricane on estruary circulation and salinity?
Salinity levels remain the same as before the hurricane.
Surface salinity drops within a few hours of a hurricane passing.
Salinity concentrations stay stable for a week after a hurricane.
Salinity quickly increases during a hurricane and then sharply decreases.
