39 Questions
What is the term used to describe the flat area off the coast of Florida?
Continental shelf
What causes the little bumps seen in the deep ocean on the elevation profile?
Underwater volcanism
What is the term used to describe the underwater volcanoes created by subduction or hot spots?
Seamounts
Which type of satellite imagery provides more detailed information about the sea floor?
Satellite imagery
What causes slight disturbances on the surface of the ocean?
Sea mounts
How do satellites measure the height of structures on the sea floor?
By detecting gravitational anomalies
What type of boundary is represented by the deep blue lines on the map?
Convergent boundaries
Which device allowed for a large-scale mapping of the ocean floor?
Multi-beam echo sounder
What is the purpose of the deep scattering layer?
To reflect sound waves
What technology helped confirm seafloor spreading?
Precision depth recorder
What technology is used to measure the seafloor from space?
Mapping from space
Which method is used to explore the Earth's crust using artificially generated waves?
Seismic reflection
What is the purpose of seismic reflection?
To locate oil and gas reservoirs
What are the three major provinces of the ocean?
Continental margins, deep ocean basins, and mid-ocean ridges
What is a bathymetric profile?
A line drawn across the ocean to show the seafloor features
What is bathymetry?
The measure of the distance from the top of the water to the bottom of the ocean.
When was the first systematic measurement of the ocean conducted?
1872
What did the early sea goers use to measure the sea floor?
Fathoms
What did the early measurements of the ocean floor reveal?
The ocean floor had deep mountains.
What type of boundary is represented by the mid-Atlantic ridge mentioned in the text?
Divergent plate boundary
What are the linear cracks formed at transform boundaries called?
Faults
What are the rounded structures formed by cooling magma on the seafloor called?
Pillow basalts
What allows water in hydrothermal vents to reach temperatures higher than boiling?
Intense pressure
What are the two types of continental margins?
Active and passive
What is the continental shelf?
The first part of the continental margin
What causes the formation of a deep ocean trench?
Subduction of oceanic crust under continental crust
What is the distinguishing feature of an active continental margin?
Tectonic activity
What is the continental shelf?
A flooded part of the continent
What is the continental slope?
The area where the mountains meet the valley
What are submarine canyons?
Narrow and V-shaped canyons
Where are the oldest seafloor typically found?
On the continental shelf
What causes turbidity currents?
Underwater landslides
What is the characteristic feature of turbidity currents?
They are supported by water
What is the term used to describe the sediment deposit caused by turbidity currents?
Turbidite deposit
What is the characteristic of suspension settling in the abyssal plains?
Particles settle out slowly
What is the name for underwater mountains that have poked through the sea floor?
Seamounts
What is the term used to describe flat areas on the sea floor that were once above the surface of the water?
Table mounts
What is the name for the deepest part of the ocean?
Mariana trench
What is the name for the longest mountain chain on the planet?
Mid-ocean ridge
Test your knowledge on satellite technology and how they accurately capture surface data in this quiz. Discover fascinating facts about satellite capabilities and their impact on various fields.
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