ORIGIN OF EARTH’S MAGNETIC FIELDS Lesson 3

D ESCRIBE THE EVIDENCE WEGENER USED TO SUPPORT HIS CONTINENTAL DRIFT IDEA :

D ESCRIBE THE PROCESS OF SEAFLOOR SPREADING :

H OW DOES THE THEORY OF TECTONICS EXPLAIN THE LOCATIONS OF VOLCANOES, EARTHQUAKES AND MOUNTAIN BELTS ON EARTH ?

D ESCRIBE THE PLATE TECTONICS THEORY :

D ESCRIBE HOW THE NORTH MAGNETIC POLE APPEARED TO MOVE, AND HOW THAT IS EVIDENCE FOR THE CONTINENTAL DRIFT :

D ESCRIBE THE THREE TYPES OF PLATE BOUNDARIES :

D ESCRIBE A FAULT :

W HAT IS THE SUBDUCTION ?

C ONSIDERING THE DIFFERENT TYPES OF PLATE BOUNDARIES, EXPLAIN THE REASON WHY THE CONTINENTAL CRUST IS MUCH THICKER THAN THE OCEANIC CRUST

D ESCRIBE THIS PICTURE :

COMPARE THE LAYERS OF THE EARTH FROM ITS CHEMICAL AND PHYSICAL STRUCTURE

T HE CONVECTION CELLS IN THE MANTLE :

DESCRIBE THIS PICTURE:

COMPARE AND DESCRIBE THESE FIGURES:

DESCRIBE THE DIFFERENCES AMONG THE DIFFERENT LAYERS OF THE EARTH:

M AGNETIC F IELDS //