Exam 15: Ocean Basins

Explain how heat is being transported by ocean currents.

Samples of sediment can be collected from the seafloor using ____.

The continental rise and continental slope are found between the deep ocean floor and the _______________.

Compared to active continental margins, continental shelves along passive continental margins tend to be ____.

Techniques that do not require direct physical contact with the ocean floor, such as ship-based echo sounders or satellite-based microwave radar, are called _______________ methods.

Where two plates converge and one dives beneath the other, a(n) _______________ zone is formed.

Beyond the Mid-Oceanic Ridge system are flat, level, featureless submarine surfaces known as the _______________.

Describe the length and width of the Mid-Ocean Ridge system.

Discuss seafloor spreading during the Late Cretaceous times.

Island arcs grow from ____.

A ____ is an open-mouthed steel net dragged along the seafloor behind a research ship to collect samples of rock.

The Mid-Oceanic Ridge system is Earth's largest mountain chain.

Magnetometers can be used to ____.

Seismic reflection profilers work by emitting a high-energy signal that penetrates and reflects from layers of sediment and rock below the seafloor.

Oceanic crust is thicker than continental crust.

The lowermost layer of oceanic crust is composed of ____.

There is no volcanic activity along subduction zones.

What is an echo sounder?

Sand, silt, and clay that erodes from the continents and is carried to the deep seafloor is called ____.

Which of these is commonly found extending from the lower end of a submarine canyon?