Tectonic plates consist of

The deep interior of the Earth can be mapped using

The layer of rock that comprises 67% of Earth’s mass

The layer of Earth made mostly of iron

The thin, solid outermost layer above the mantle

The rigid layer made up of crust and upper mantle

The layer made of solid rock that slowly flows

The lower part of the mantle

Wegener thought that all the continents were once together in one large continent called

New oceanic lithosphere forms as a result of

Evidence for sea-floor spreading has come from

Hypothesis that states that the continents were once one large mass that broke apart

Process that takes place at mid-ocean ridges

Part of molten rock at mid-ocean ridges

Process of Earth’s magnetic poles changing places

Items that provide evidence that the continents were once closer together

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