earthquakes

3 articles · All tags

• How Do Tsunamis Form and Travel Across Oceans?
  A tsunami forms when the seafloor suddenly moves and pushes a whole column of water, sending waves across oceans at jet speed that grow tall only near the coast.
• Earthquakes and Seismic Waves
  Sudden release of stress along faults generates seismic waves that travel through Earth, measured by seismographs and magnitude scales.
• Plate Tectonics
  The theory that Earth's outer shell consists of moving plates whose interactions build mountains, open oceans, and trigger earthquakes and volcanoes.