Earthquakes and Plate Tectonics Vocab. Review

Front

Ancient landmass of all continents

Back

Pangaea

Front

Scientist studying earthquakes

Back

seismologist

Front

Theory that hot, less dense material below Earth's crust rises at mid-ocean ridges, flowing sideways and carrying the seafloor away.

Back

seafloor spreading

Front

Earthquake and volcano belt in Pacific-bordering countries

Back

Ring of Fire

Front

Point on Earth's surface above quake focus

Back

epicenter

Front

Measuring system by Dr. Charles F. Richter for earthquake strength.

Back

Richter Magnitude Scale

Front

Instrument that records time, duration, and intensity of earthquakes

Back

seismograph

Front

Strong support for seafloor spreading via magnetic reversals at mid-ocean ridges.

Back

Magnetic Time Scale

Front

Waves from an earthquake's center that rock side to side quickly

Back

s-waves

Front

Theory that continents move a few cm yearly

Back

Continental Drift