Plate Tectonics/History of Earth

Name this plate boundary.

• divergent
• convergent
• transform
• allegiant 

Name this plate boundary.

• divergent
• convergent 
• transform
• insurgent

200-300 million years ago, the continents were joined in a single land mass called...

• Pan America
• Pangaea
• Pan Acean
• 'Murica

Which piece of evidence was not used by Wegener to support his theory of continental drift?

• South America and Africa coastlines
• coal beds in Antarctica
• plant and reptile fossils
• earthquake patterns

What forms when two oceanic plates diverge?

• moutains
• rift valley
• mid-ocean ridge
• deep-ocean trench

What occurs when two plates come together and the denser one is forced under back into the mantle?

• reduction
• conduction
• subduction
• convection

Which type of plate boundary would cause folded mountains to form? 

• transform
• convergent
• divergent
• subduction

What drives tectonic plate movement? 

• gravity
• coriolis effect
• convection currents
• the earth's magnetic core

According to Wegener's hypothesis of continental drift, 

• Earth's surface is made up of seven major landmasses
• the continents DO NOT move
• Earth is slowly cooling and shrinking
• the continents were once joined together in a single landmass

What were magnetic stripes on the ocean floor used to show?

• the seafloor was spreading outward from the mid-Atlantic ridge
• the seafloor was spreading inward toward the mid-Atlantic ridge
• the seafloor was effectively stationary
• natural magnetic rocks always form in the mantle of the Earth