DW 8/25 1._________ Layer of molten iron and nickel that surrounds the inner core. 2._________ Thinnest, outermost layer of Earth; ranges from 5 to 100 km thick. 3._________ Name of the theorized super continent. 4._________ Rigid layer consisting of the crust and uppermost part of the mantle. 5._________ Dense sphere of solid iron and nickel. 6._________ Soft layer of the mantle on which pieces of lithosphere slowly float. 7._________, ________, __________, _____________ Four details that support Alfred Wegener’s Theory of Continental Drift.

How are plate movements related to the processes of the Earth?

Vocabulary TermHintDefinition Epicenter Seafloor spreading Rift Subduction zone Convergent boundary Divergent boundary Convection Transform boundary

Vocabulary Term HintDefinition EpicenterPoint on Earth’s surface directly above an earthquake’s focus Seafloor spreading Hess’s theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge Riftlong crack, fissure, or trough that forms between tectonic plates moving apart at plate boundaries Subduction zone Location where one plate slips under a less dense plate at a convergent boundary

Vocabulary Term HintDefinition Convergent boundary Location where two plates come together Divergent boundary Location where two plates move apart Convection current Current in Earth’s mantle that transfers heat in Earth’s interior and is the driving force for plate tectonics Transform boundary Location where two plates move opposite direction alongside each other

Create Flipbook Hamburger fold 3 flaps –Convergent Boundary –Divergent Boundary –Transform Boundary

Convergent Plate Boundaries plates move towards each other –Continent/continent High mnts form –Continent/ocean Subduction occurs Trenches form Volcanoes form Strong earthquakes

Divergent Plate Boundary plates move away from each other mid-ocean ridges created through a crack in underwater crust new crust is formed

Transform Plate Boundaries Crust neither created nor destroyed Earthquakes created from stress released when the plates slide along each other Example: –San Andreas fault in California

Time to predict!

Tectonic Plates Earth’s crust is broken into pieces called plates These plates are part of the lithosphere and move on top of the asthenosphere Boundaries are drawn by studying earthquakes and volcanic eruptions.

Map of Earth’s Plates

Key to Earth’s Plates  Juan de Fuca  Cocos  Nazca  Caribbean  Scotia  Filipino  North American  South American  Eurasian  African  Australian  Antarctic  Pacific  Indian  Arabian

Let’s check our answers!

This picture explains which vocabulary term?

What type of boundary?

What type of boundary?

Vocabulary Term HintDefinition EpicenterPoint on Earth’s surface directly above an _____________ focus Seafloor spreading Hess’s theory that ___ ________ is formed when magma is forced upward toward the surface at a mid-ocean ____ Riftlong ______, fissure, or trough that forms between tectonic plates moving ______ at plate boundaries Subduction zone Location where one ______ slips ______ a less dense plate at a __________ boundary

Vocabulary Term HintDefinition Convergent boundary Location where two plates ______ ________ Divergent boundary Location where two plates ______ ___________ Convection current Current in Earth’s mantle that transfers _____ in Earth’s interior and is the driving ______ for plate tectonics Transform boundary Location where two plates _____ opposite direction _________ each other

Cut along the dotted lines.