Quizlet Science,Earthquakes and Tsunamis

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  1. Compressional: Two plates pulling towards each other
  2. Earthquake intensity: beside size an earthquake can be compared by intensity
  3. Epicenter: This consists of three seismographs,you need one in different places.You record what you got for all three of them and with computer calculations figure out the center were it came from
  4. Extentional: Two plates pushing away from each other
  5. How long is it to get to the center of earth?: 6,000km (60,000m)
  6. How many plates are there?: 10 major ones and many small ones
  7. Pangea: A super continent
  8. Plate: A large rigid slab of rock
  9. Primary waves: They are the strongest type of waves, and they are most dangerous and they move rock.
  10. Richter Scale: A scale that measures earthquakes and tsunamis,it is a machine used around the world
  11. Secondary waves: These waves are slow, and they are near the surface
  12. Seismograph: A machine that measures earthquakes
  13. Surface waves: Waves that are very slow.
  14. The 3 Types of plate movement: Extentional,Compressional,and Transform
  15. the 3 types of seismic waves: P waves (primary waves), S waves (secondary waves), and surface waves
  16. Transform: Two plates going the oppostie way
  17. Tsunami: They are underwater earthquakes, and can travel to 600 mph, and it can go 400 miles
  18. What happens before a tsunami comes?: The water line will recede
  19. Where are earthquakes the strongest?: At the epicenter, if you go farther from the epicenter the earthquake gets weaker.