Litosfera

The video explains the structure of the Earth's lithosphere, focusing on the crust, upper mantle, lower mantle, and core. It describes how tectonic plates, which are part of the lithosphere, move due to convection currents in the mantle. The video also compares the thickness of oceanic and continental lithospheres.

What distinguishes the crust and upper mantle from the lower mantle and core?

• They are hotter.

• They are more liquid.

• They are less dense.

• They are more solid.

What are tectonic plates?

• Parts of the ocean floor.

• Solid blocks of the core.

• Pieces of the lithosphere.

• Layers of the atmosphere.

What causes tectonic plates to move?

• Wind patterns.

• Volcanic eruptions.

• Earthquakes.

• Convection currents in the mantle.

How thick is the oceanic lithosphere?

• 100 to 200 km.

• 10 to 20 km.

• 30 to 50 km.

• 50 to 100 km.

How does the thickness of the continental lithosphere compare to the oceanic lithosphere?

• It is thinner.

• It is the same thickness.

• It is twice as thick.

• It is half as thick.