Pangea - Millions of years ago, there was one giant land mass called _____. Over the past millions of years the continents have moved to form the earth as we know it today., Alfred Wegener - In 1910 a young scientist named _______ proposed the theory of Continental Drift. , Continental Drift - In 1910 a young scientist named Alfred Wegener proposed the theory of ________. No one believed that at some point all of the continents were connected., Fossil evidence - there were fossils of reptiles on different continents that are divided by water. And these reptiles could not swim., Climatic evidence - There were fossils of tropical plants found in Antartica., Geological evidence - There was similar rock strata found in the US and Scotland., Plate Tectonics - The theory of _______ states that the earth's crust and upper mantle are broken into 2 sections called plates. Plates are the same thing as crust. , Asthenosphere - The lithospheric plates float on _______., Continental and oceanic - The twos types of lithospheric crust are _____ and _____., Fault - An active boundary between two plates is called a ______ line., COnvergent - Plates that move toward each other form ______ boundaries., DIvergent - Plates that move apart are ______ boundaries. , Transform - Plates that slide past each other form ______ boundaries., Convergent and transform - Earthquakes tend to occur at _____ and _____ boundaries., Ring of fire - The ______ is an areas in the Pacific Ocean that has a tremendous amount of volcanic activity. , Oceanic and continental - Subduction zones occur when ______ crust goes underneath _____ crust., Mantle - After oceanic crust goes underneath continental crust, the crust is then pushed back down into the ______ and recycled., Sea floor spreading - _______ occurs when magma from the Earth's mantle rises to the surface at mid-ocean ridges and cools to form new sea floor., Divergent - Mid Ocean Ridges occur at ______ boundaries in the ocean floor., SUbduction - Ocean Trenches occur in _______ zones., Subduction - Volcanoes tend to occur in _______ zones., San Andreas Fault Line - _______ is an example of a TRANSFORM boundary., Himalayas - The ________ are an example of an effect of a convergent boundary., Convergent - The Himalayas are an example of a _______ boundary., Continental - ______ crust is thicker than oceanic crust., Oceanic - Continental crust is thicker than ______ crust. , Convection currents - Heat causes _______ in the mantle, which is what causes continental drift to occur. , Mountains and volcanoes - Two landforms that occur at a convergent boundary are: _______ and _______., Mid-ocean ridges - What is another name for underwater mountains?,

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