Exploring the Ocean
Life at the Ocean's Edge
Neritic Zone/Open Ocean
Resources from the Ocean
Miscellaneous
100
3 factors that make exploring the ocean floor difficult.
What is darkenss, cold and pressure
100
Pollutants such as pesticides, sewage, and industrial waste, are carried into estuaries by__________.
What is a river.
100
_____________ plakton form the base of open-ocean food webs.
What is algae.
100
Over time, heat and pressure transform the remains of dead organisms buried on the ocean floor into __________________.
What is oil and gas deposits.
100
The thin, rocky, outer layer of Earth is called the _______.
What is crust.
200
The continuous range of mountains on the ocean floor that winds around Earth.
What is mid-ocean ridge.
200
A ____________ is a coastal inlet or bay where fresh water from a river mixes with ocean water.
What is an estuary.
200
The only part of the open ocean that receives enough sunlight to support algae growth is the ______________.
What is surface zone.
200
The farming of saltwater and freshwater organisms is called __________________.
What is aquaculture.
200
At the mid-ocean ridge, magma wells upward from Earth's __________.
What is mantle.
300
A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent.
What is continental shelf.
300
Two kinds of coastal wetlands are _____________ and _______________.
What is salt marshes and mangrove forest.
300
Coral reefs and kelp forests are usually found in the _________________.
What is neritic zone.
300
Most pollution in the ocean comes from____________.
What is humans.
300
Sea-floor spreading occurs where plates are __________ at the mid-ocean ridge.
What is diverging.
400
A smooth, nearly flat region of the deep ocean floor.
What is abyssal plain.
400
Free-swimming animals that move throughout the water column are called ____________.
What is nekton.
400
Extends from the bottom of the surface zone to the sea floor.
What is the deep zone.
400
A black, potato-shaped lump formed when metals build up around pieces of shell on the ocean floor.
What is a nodule.
400
The _________ are the deepest places on the ocean floor.
What is trenches.
500
a mountain on the ocean floor that is completely underwater.
What is a seamount.
500
Organisms that live in the ___________ zone must be able to tolerate periods of being exposed to the air.
What is interdial.
500
Extends beyone the edge of the continental shelf.
What is the open ocean.
500
______________ causes the supply of fish to decrease.
What is overfishing.
500
An area where ocean water sinks through cracks in the ocean floor, is heated by the underlying magma, and rises again through the cracks.
What is hydrothermal vents.
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