Ch. 4-2: Restless Continents Notes• Wegner believed that the continents were

once all connected. His evidence for his hypothesis was fossils.

• He named the single landmass “Pangaea.”

• Magnetic minerals are part of molten rock at mid-ocean ridges that provide evidence for magnetic reversals.

S

SN

N

North Pole North Pole

South Pole South Pole

Normal Polarity Reverse Polarity

Ch. 4-2: Restless Continents Notes

• Wegner’s hypothesis of continental drift states that all the continents were once connected and eventually separated. He named the single landmass “Pangaea.”

Pangaea

Laurasia

Gondwana

North America

Eurasia

Africa

South America

India

Antarctic Australia

Europe

Asia