CIE Geography Plate Tectonic & Volcanoes

Theory that Earth's crust is divided into plates & the plates move around on the mantle

• Seafloor spreading

• Plate tectonics

• Continental drift

• Earthquakes

Volcanoes having alternate layers of lava & tephra, have repeated explosive & non-explosive eruptions

• Composite volcano

• Shield volcano

• Mid-ocean ridge

• Cinder cone volcano

The supercontinent in the continental drift hypothesis was called ____.

• Pantry
• Pangaea
• Wegenerland
• Eurasia

The lithospheric plates move an average of ____.

• 5 inches/year
• 5 cm/year
• 3 cm/year
• 5 feet/year

The formation of the Hawaiian Islands is associated with ____.

• a transform boundary
• hot spots
• convergent boundaries
• divergent boundaries

What forms when one oceanic plate is forced beneath another plate?

• subduction zone
• an ocean ridge
• a rift valley
• an ocean basin

What is the largest tectonic plate?

• North American
• Pacific
• Antarctic
• Eurasian

Tectonic plates float on top of the ________

• Crust

• Mantle

• Inner Core

• Outer Core

A weak spot in the crust where molten material, or magma comes to the surface

• lava
• volcano
• earthquake
• tsunami

Tall, cone-shaped mountains in which layers of lava alternate with layers of ash

• Cinder Cone volcano
• Shield volcano
• Composite volcano
• Caldera