Corteza oceánica

The video explains the oceanic crust, a solid layer under the oceans, denser than continental crust, rich in iron and magnesium, with a thickness of 5-10 km. It forms in oceanic mountain ranges and is destroyed in subduction zones.

What is the primary characteristic of the rocks found in the oceanic crust compared to the continental crust?

• They are the same density.

• They are lighter in color.

• They are more dense.

• They are less dense.

Which elements are found in high proportions in the oceanic crust?

• Silicon and aluminum

• Iron and magnesium

• Oxygen and hydrogen

• Carbon and nitrogen

What is the typical thickness range of the oceanic crust?

• 5 to 10 km

• 20 to 25 km

• 1 to 3 km

• 15 to 20 km

Where is the oceanic crust primarily formed?

• In desert regions

• In oceanic mountain ranges

• In polar ice caps

• In continental mountain ranges

What happens to the oceanic crust in subduction zones?

• It is expanded.

• It is destroyed.

• It is uplifted.

• It is preserved.