Marine Science Module 01: Ocean
Exploration Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
Abyssapelagic Zone and organisms: - CORRECT ANSWER - Abyssopelagic - Fourth
level of the ocean, where angler fish, some eels, and other marine life live. Also known as the
abyss, it extends from 4,000 to 6,000 meters. Water temperatures are near freezing.
-basket star, sea spider, deep sea cucumber
AUV (autonomous underwater vehicle) - CORRECT ANSWER - An AUV is also an
unmanned robot, but instead of being tethered to a surface vessel, it is controlled by onboard
computers. AUVs can be preprogrammed to collect data in certain areas, without real-time
control by human operators.
Ballasts - CORRECT ANSWER - material that provides stability to a vehicle or structure
bathypelagic zone and organisms: - CORRECT ANSWER - Third level of the ocean,
where squids, eels, and some whales live and thrive. Also known as the midnight zone, this
extends from 1,000 to 4,000 meters. There is no visible light, and there is immense water
pressure.
-vampire squid, anglerfish, deep-sea shrimp
Benefits of models: - CORRECT ANSWER - -Easier and less expensive to work with
-Ability to test and redesign experiments quickly
-Ability to simulate a smaller portion of a large system
Coriolis effect - CORRECT ANSWER - The effect of Earth's rotation on the direction of
winds and currents.
, Describe how each property affects the density of water:
Depth - CORRECT ANSWER - Deep water is denser than shallow water. The water
molecules are packed together more tightly because of the weight of water above pushing down.
Describe how each property affects the density of water:
Salinity - CORRECT ANSWER - Remember that seawater is not just water; it has ions
and minerals dissolved in it. The higher the salinity of the water, meaning the more salt packed
into the water, the higher the density.
Describe how each property affects the density of water:
Temperature - CORRECT ANSWER - Warm water is less dense than cold water. As liquid
water gets warmer, its molecules spread out so it becomes less dense. As it gets colder, the
molecules are packed closer together so it becomes denser.
Describe one way scientists study fluid dynamics: - CORRECT ANSWER - They create
models
Downwelling - CORRECT ANSWER - The movement of water from the surface to
greater depths, to the more dense area.
Epipelagic ocean zone and organisms: - CORRECT ANSWER - Epipelagic - For life that
requires the most sunlight, it is the closest to the surface, therefore, giving plenty of light for
plants using photosynthesis, and animals require no bio-luminescence (200m down)
-dolphin, starfish, sea turtle
Example of a problem in a marine ecosystem: - CORRECT ANSWER - Crown of thorn
starfish are killing the coral
Exploration Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
Abyssapelagic Zone and organisms: - CORRECT ANSWER - Abyssopelagic - Fourth
level of the ocean, where angler fish, some eels, and other marine life live. Also known as the
abyss, it extends from 4,000 to 6,000 meters. Water temperatures are near freezing.
-basket star, sea spider, deep sea cucumber
AUV (autonomous underwater vehicle) - CORRECT ANSWER - An AUV is also an
unmanned robot, but instead of being tethered to a surface vessel, it is controlled by onboard
computers. AUVs can be preprogrammed to collect data in certain areas, without real-time
control by human operators.
Ballasts - CORRECT ANSWER - material that provides stability to a vehicle or structure
bathypelagic zone and organisms: - CORRECT ANSWER - Third level of the ocean,
where squids, eels, and some whales live and thrive. Also known as the midnight zone, this
extends from 1,000 to 4,000 meters. There is no visible light, and there is immense water
pressure.
-vampire squid, anglerfish, deep-sea shrimp
Benefits of models: - CORRECT ANSWER - -Easier and less expensive to work with
-Ability to test and redesign experiments quickly
-Ability to simulate a smaller portion of a large system
Coriolis effect - CORRECT ANSWER - The effect of Earth's rotation on the direction of
winds and currents.
, Describe how each property affects the density of water:
Depth - CORRECT ANSWER - Deep water is denser than shallow water. The water
molecules are packed together more tightly because of the weight of water above pushing down.
Describe how each property affects the density of water:
Salinity - CORRECT ANSWER - Remember that seawater is not just water; it has ions
and minerals dissolved in it. The higher the salinity of the water, meaning the more salt packed
into the water, the higher the density.
Describe how each property affects the density of water:
Temperature - CORRECT ANSWER - Warm water is less dense than cold water. As liquid
water gets warmer, its molecules spread out so it becomes less dense. As it gets colder, the
molecules are packed closer together so it becomes denser.
Describe one way scientists study fluid dynamics: - CORRECT ANSWER - They create
models
Downwelling - CORRECT ANSWER - The movement of water from the surface to
greater depths, to the more dense area.
Epipelagic ocean zone and organisms: - CORRECT ANSWER - Epipelagic - For life that
requires the most sunlight, it is the closest to the surface, therefore, giving plenty of light for
plants using photosynthesis, and animals require no bio-luminescence (200m down)
-dolphin, starfish, sea turtle
Example of a problem in a marine ecosystem: - CORRECT ANSWER - Crown of thorn
starfish are killing the coral
