Plate Tectonics

__________: theory that continents have moved horizontally to their current locations.

The broken sections of the lithosphere are.....

Largest layer of Earth, composed mostly of silicon, oxygen, magnesium and iron.

The plasticlike layer of Earth below the lithosphere.

Instrument that records magentic fields that help confirm seafloor spreading.

When seafloor is forced under continental plates - this type of boundary is called

The primary force that causes the seafloor to spread and continents to drift.

When all the continents were connected, it was called......

one plate sliding past another is called...

Plate Boundary that occurs when two plates slide past one another.

_____________ is where two plates move away from each other.

____ is where an oceanic plate descends into the upper mantle.

This refers to the mantle's cycle of heating, rising, cooling and sinking.

_______________ is where two plates collide.

The lithosphere is divided into large pieces of crust called

This is the theory that states the Earth's crust and upper mantle are broken into sections.