Sections of Crust Moving Around! Plate Boundaries Sections of Crust Moving Around! Class Zone Animations

Earth’s Internal Structure Earth cut in half is called a __________________________ Cross Section The outer layer is called the _____________________ (crust) Lithosphere The layer below the crust is the _____________ (upper mantle) Asthenosphere Below the asthenosphere is the _____________ (melted rock) Mantle Below the mantle is the _____________ (liquid metals) Outer Core The layer below the crust is the _____________ (solid metals) Inner Core

Earth 130 m.y.a. Over time the ____________ have ____________________ continents separated Continents are part of ________ that ______on the upper mantle Crustal plates “float” Continental plates float _______ due to their ________________ higher lower density Crustal plates come together and move apart at ______________ ________________ Plate Boundaries Continental Drift Animation

Divergent Plate Boundaries Places where oceanic crust splits apart are called ___________ Divergent Boundaries Convection Cells in the ___________ split the crust apart mantle Volcanoes __________________ form in the _____________________ where the crust splits apart Rift Zone A _________ mountain range formed here is called the ___________ ____________ __________ volcanic MID OCEAN RIDGE Mantle convection cell Divergent Boundary Animation

Convergent Plate Boundaries Places where an oceanic plate meets a continental plate are called ______________________ Convergent Boundaries Convection Cells in the ______ push the plates together mantle The _______________sinks below the ______________ Because it is more __________ This is called the _________ ____________ OCEANIC PLATE Continental Plate DENSE Subduction Zone ____________ helps pull the oceanic plate down into the mantle! GRAVITY ____________ and ___________ form on land near convergent-subduction boundaries. Earthquakes Volcanoes Subduction Zone Animation

Convergent Plate Boundaries Places where an oceanic plate meets another oceanic plate are also called _________________________ Convergent Boundaries Convection Cells in the ______ push the plates together mantle oceanic plate One _______________sinks below the other ____________ This is called the _________ ____________ OCEANIC PLATE Subduction Zone ____________ helps pull the oceanic plate down into the mantle! GRAVITY ____________ and ___________ happen here. Some volcanoes grow large enough to form ____________ Earthquakes Volcanoes Islands

Convergent Plate Boundaries

Convergent Plate Boundaries Places where two continental plates come together are also called ___________________ Convergent Boundaries Convection Cells in the ______ push the plates together mantle The two plates are the same ___________ so neither one sinks! This is called the _________ _______ DENSITY Collision Zone Since there’s no subduction there are no ____________ Volcanoes formed ________________and ____________ form here! Some are the highest mountains in the world! Earthquakes Mountains Collision Zone Animation

Transform Plate Boundaries Places where two plates slide past each another are called ___________________ Transform Boundaries Convection Cells in the ______ push the plates past one another. mantle Subduction There’s no ____________ so there’s no magma formed. The only thing that happens here are ____________ Earthquakes In the geologic future, Los Angeles will be a neighbor of San Francisco because they are on opposite sides of a transform plate boundary! Transform Animation

Tell the type of boundary, what happens, and what forms here… Ex: This is a ___ boundary where __ and __plates _____ to form ________________

Tell the type of boundary, what happens, and what forms here…

Tell the type of boundary, what happens, and what forms here…

Tell the type of boundary, what happens, and what forms here…