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Earths History



                              P L A T E                            
                                I                                  
                                T                                  
                        E P O C H                     I            
                                O             V   E O N            
                                S   U         O       D            
                                P   P         L     P E R I O D    
                                H   L         C       X            
                                E   I         A       F A U L T    
                        G       R   F         N       O            
              E   P   S E D I M E N T A R Y R O C K   S   I        
              X   R     O                             S   G        
              T   E     L A W O F S U P E R P O S I T I O N        
              I   C     O                             L   E        
              N   A     G                     L         F O S S I L
              C A M B R I A N P E R I O D     A       M   U        
              T   B     C                     V       A   S        
              I   R   R A D I O A C T I V E D A T I N G   R        
              O   I     L                             M   O        
              N   A     T E C H T O N I C P L A T E   A   C R U S T
    S             N     I                                 K        
    E     W     E       M E T A M O R P H I C R O C K              
M I D O C E A N R I D G E                                          
    I     A     O       S E A F L O O R S P R E A D I N G          
    M     T     S       C                               E          
    E     H     I       A B S O L U T E D A T I N G     O          
    N     E     O       L                               L          
    T   E R A   N     R E L A T I V E D A T I N G       O          
    S     I           O         C     E                 G          
          N           C         E     P                 Y          
          G           K         C     O                            
                      C         O     S                            
                      Y         R     I                            
                      C         E     T                            
                      L               I                            
                      E               O                            
                                      N                            
Across Down
1 Ridges pieces that together make up earths surface
3 A devision of time that is a subdevision of a period
6 An indefinitely long period of time; age
8 A length or portion of time
9 A brake and a body of rock
13 One of the three main rock groups
15 Law that states that in a sequence of rocks the youngest layer is on top and oldest on bottom
17 Impression of a prehistoric organism
18 the first geological time period in the Paleozoic era!
20 A method of dating rocks and minerals
21 Also called lithospheric plate
22 The outermost solid shell of a rocky planet
26 A result of a transformation of a pre-existing rock
27 Underwater mountain system
28 Formation of new areas of oceanic crust
30 What is he process of determining an age in archaeology
31 A long and distinct period of history
32 What is the science of determining the order of past events
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2 The ridged outer part of the earth
4 Also called zone fossil
5 A rupture in the crust of a planet
7 To elevate or to raise something up
10 Is a system of chronological dating used by geologist
11 The state of a species becoming extinct
12 What is the earliest 4.6 billion years of earths history called?
14 These rocks crystallize below earths surface
16 Molten rock expelled by a volcano
19 A mixture of molten rock and solids that is found beneath the surface of earth
23 Matter that settles at the bottom of a liquid
24 A change in appearance or texture because of exposure to air
25 Gradual destruction
29 The study of solid earth
32 A group of changes where rocks change into other forms
33 A core sample removed from an ice sheet
34 A formal statement to be used as evidence
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