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A Little Quiz...

1/  Roughly, how many lithospheric plates travel at the surface of the Earth?

2/ What is their average speed in cm/y?

3/ How do you know you are standing on or near a plate boundary?

4/ How many lithospheric plates share a boundary with the Australian plate?

5/ What is the nature of these plate boundaries?

6/ What are the three main types of plate boundaries?

7/ Give an example of divergent plate boundary, an example of convergent plate boundary, and an example of transform plate boundary.

8/  The subduction angle is important in what respect?

9/ What is a flush instability?

10/ What is a thermal boundary layer?
 

 11/ Where do mantle plumes get initiated?

12/  Assuming a steady state geotherm, what is the temperature at the Moho?

13/ What is the nature of the lithosphere -asthenosphere boundary?

14/ What is the temperature at the lithosphere -asthenosphere boundary?

15/ What are the main heat-producing radiogenic elements?

16/ Where are they distributed in the lithosphere?

17/ What is the average density of the continental crust?

18/ What is the average density of the lithospheric mantle?

19/ What is/are the strongest layer(s) of the continental lithosphere?

20/  In the theory of isostasy what is the compensation depth?