Ch. 6 Plate Tectonics

The place where older crust is destroyed because two plates converge, or push together.

I'm Earth's crust and the very top of the mantle combined.

I'm a plate with oceanic crust sinking under a plate with continental crust.

I'm the large slabs of rock that make up pieces of the lithosphere.

I occur where two plates move past each other in opposite directions.

I'm the transfer of heat within a material.

The hypothesis proposing Earth's continents were once joined in a single mass, then moved apart

The name Alfred Wegener gave to the huge supercontinent that he proposed had once existed.

I'm the huge underwater mountain ranges that are present in every ocean and circle Earth.

I occur where tectonic plates move apart.

I'm a plate with ocean crust sinking under another plate with ocean crust.

Earth's lithosphere is broken into huge, moving slabs of rock driven by motions in the mantle.

I'm an area of volcanic activity that develops above rising plumes of magma.

I'm the switch in direction of Earth's magnetic north and south poles.

I'm the motion created when heated material continually rises, cools, and sinks.

I'm a layer of liquid metals that surrounds the inner core.

I'm one plate sinking beneath another.

I'm the gap that forms as tectonic plates move apart.

I'm Earth's thickest layer, measuring nearly 2900 kilometers.

I occur where plates with continental crust push together.

If the Earth were an egg, I'd be the shell.

I'm a ball of hot, solid metals (iron & nickel) at Earth's center.

I'm the layer of hotter, softer rock in the upper mantle.