Lithosphere

The video explains the structure of the lithosphere, highlighting the differences between the crust and upper mantle compared to the lower mantle and core. It describes how the lithosphere is divided into tectonic plates, which 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 less dense.

• They are more rigid.

• They are more fluid.

What are tectonic plates?

• Large bodies of water.

• Sections of the lithosphere.

• Layers of the atmosphere.

• Parts of the core.

What causes tectonic plates to move?

• Earthquakes.

• Volcanic eruptions.

• Convection currents in the mantle.

• Wind patterns.

How thick is the oceanic lithosphere?

• 10 to 20 kilometers.

• 30 to 50 kilometers.

• 100 to 150 kilometers.

• 50 to 100 kilometers.

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

• It is thinner.

• It is three times as thick.

• It is the same thickness.

• It is up to twice as thick.