Questions for Section 1

                           Earth's Layers and Earth's Structure
 

1. How did Andrija Mohorovicic discover that the earth's crust was made of less dense rock than the mantle?
 
 

2. Write in your own words the definition of a discontinuity.
 
 
 

3.  Name the four layers of the Earth in order from the outside to the center of the Earth.
 
 
 

4.  What causes the mantle to "flow"?
 
 
 

5.  What are the two main metals that make up the outer core and the inner core?
 
 
 

6.  Describe in your own words how the Earth's layers were formed.
     Page two in Earth's Structure will help you.