earth's mechanism

• Continental Drift Theory


  Proposed by Alfred Lothar Wegener that about 200 million years ago, the continents were one big landmass
• Pangaea


  Greek word which means "all earth." Separated into Laurasia and Gondawanaland
• Evidences of the Continental Drift Theory

  • Continental fit
  • Fossil evidence
  • Evidence from glaciation
  • Climate
• Plate Tectonic Theory


  Lithosphere is separated into plates that are over the asthenosphere
• Heat Energy


  Facilitates plate movement
• Core


  Hot, very dense center of the planet