Plate Tectonics Introduction

Where are the youngest rocks on Earth found?

• Along mid-ocean ridges

• Along transform boundaries

• On the edges of the continents

• Near ocean trenches

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Who was the scientist who proposed the theory of continental drift?

• Alfred Powell

• Harry Hess

• Alfred Wegener

• Ernest Rutherford

Tectonic plates are made of?

• The mantle

• Continental and oceanic lithosphere

• The outer core

• The mesosphere

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What does the theory of Continental Drift explain?

• Ocean currents move continents around the planet

• Convection works deep within the asthenosphere

• Mid-ocean ridges force tectonic plates to move

• Continents were once together and slowly drifted to where they are today

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Where does seafloor spreading take place?

• Convergent boundaries

• The continentals shelves

• Transform boundary

• Mid-ocean ridges

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What is the driving force behind the movement of the tectonic plates?

• Gravity

• Convection

• Wave motion

• Seismic activity

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The super continent that existed when all continents were together was named

• Gondwana

• Laurasia

• Eurasia

• Pangea

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This type of boundary creates rift zones and shallow earthquakes

• Transform

• Continental-Continental Convergent

• Divergent

• Oceanic-Continental Convergent

Subduction zones occur along

• Transform boundaries

• Continental-Continental boundaries

• Divergent boundaries

• Oceanic-Continental boundaries

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What is the process of convection?

• The process of hot material rising and cooler material sinking in circular patterns

• The process of hot rock solidifying and forming new crust

• The process of explaining what goes up must come down

• Strong ocean currents moving tremendous amounts of material

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