Plate Tectonics Vocabulary Quiz

inner core

• an extinct reptile that lived about 300 million years ago

• layer of hot, soft rock in the upper mantle

• cold, brittle layer of Earth made up of the crust and the very top of the mantle

• a ball of hot, solid metals at Earth’s center of Earth, under great pressure

Asthenosphere

• layer of hot, soft rock in the upper mantle

• thin layer of cool rock that covers Earth like the shell of an egg

• a ball of hot, solid metals at Earth’s center of Earth, under great pressure

• a pattern of movement of where hot materials rise and cool materials sink

Outer core

• The theory states that Earth’s lithosphere is made up of huge plates that move over the surface of Earth.

• thin layer of cool rock that covers Earth like the shell of an egg

• a layer of liquid metals that surrounds the Earth’s inner core

• a ball of hot, solid metals at Earth’s center of Earth, under great pressure

Crust

• thin layer of cool rock that covers Earth like the shell of an egg

• cold, brittle layer of Earth made up of the crust and the very top of the mantle

• a pattern of movement of where hot materials rise and cool materials sink

• a layer of liquid metals that surrounds the Earth’s inner core

rift valley

• a long chain of underwater mountain ranges where tectonic plates move apart and magma rises and cools to form rock

• deep canyons that form in the ocean floor as a plate sinks

• occurs where oceanic plates move apart.

• a deep valley formed as tectonic plates move apart. Found along a mid-ocean ridge (located in between mid-ocean ridges)

deep-ocean trench

• plate boundary where two plates are pushing towards each other

• deep canyons that form in the ocean floor as a plate sinks

• a long chain of underwater mountain ranges where tectonic plates move apart and magma rises and cools to form rock

• a deep valley formed as tectonic plates move apart. Found along a mid-ocean ridge (located in between mid-ocean ridges)

magma

• molten (melted) rock that reaches Earth’s surface

• Earth’s thickest layer, made up of hot rock, surrounding the outer core

• molten (melted) rock located in Earth’s interior

• Supercontinent of all continents together