Ch 3 Part 1 Vocab

Front

A layer of hot rock.

Back

mantle

Front

Sphere of solid iron and nickel at Earth's center.

Back

inner core

Front

Upper part of mantle & crust.

Back

lithosphere

Front

Plastic layer below the lithosphere.

Back

asthenosphere

Front

Layer of rock forming Earth's outer skin (land & ocean floor)

Back

crust

Front

Layer of molten iron & nickel surrounding the inner core.

Back

outer core

Front

Hypothesis of continents moving across Earth's surface.

Back

Continental Drift

Front

Trace of an ancient organism preserved in rock.

Back

fossil

Front

Single landmass that split 200 million years ago.

Back

Pangaea

Front

Undersea mountain chain producing new ocean floor.

Back

Mid-Ocean Ridge