22.2. Lithosphere and Asthenosphere

Try these first

1. 1.

   What is the approximate thickness of the lithosphere?

   Hint

   Think about how thick the outer layer of the Earth is.

2. 2.

   What does the asthenosphere allow?

   Hint

   Consider what happens below the rigid layer of the Earth.

3. 3.

   What is the approximate thickness of the lithosphere?

   • 50 km
   • 100 km
   • 150 km

   Hint

   It is a standard measurement used in geology.

4. 4.

   The asthenosphere is primarily characterized by which physical state?

   • True
   • False

   Hint

   Consider how this layer behaves beneath the lithosphere.

5. 5.

   Analyze how the dynamics of the lithosphere and asthenosphere can lead to the formation of mountain ranges. Cite examples.

   Hint

   Consider plate interactions and the resulting geological formations.

6. 6.

   Discuss the impact of mantle convection currents in relation to plate tectonics and geological hazards.

   Hint

   Explore how heat from the Earth's interior can cause movement and the effects of this on surface geology.