tsnuamis

• What is the primary cause of most tsunamis?

  Large underwater earthquakes along subduction zones
• How does an earthquake lead to the formation of tsunami waves?

  The sea floor uplifts, displacing the water column
• What happens when a tsunami reaches the coast?

  A vacuum is produced, sucking water out
• What are the steps in the generation of a tsunami?

  1. Underwater earthquake occurs
  2. Sea floor uplifts, displacing water
  3. Tsunami waves form and travel
  4. Waves slow down and increase in height
  5. Energy concentrates into smaller volume
• What factors influence the characteristics of tsunami waves?

  Cause, distance traveled, wave depth, topography
• What happens to tsunami waves as they slow down?

  They increase in height and produce shove waves
• How does land use and population density affect tsunami destruction?

  Higher density leads to greater destruction potential
• What role do sea floor irregularities play in tsunami energy?

  They can reduce the energy of tsunami waves
• What are the impacts of large tsunamis?

  • Destroy buildings and infrastructure
  • Wash away soil and uproot trees
  • Change the landscape significantly
  • Cause fatalities and injuries
  • Contaminate food and water sources
• What can happen to soil during a tsunami?

  It can be washed away, undermining foundations
• What diseases can result from tsunami flooding?

  Diseases like cholera due to contamination
• How do tsunamis affect human populations?

  They can lead to many deaths and injuries
• how are tsunamis predicted

  there is no way in predicting then as they are caused by underwater earthquakes, however it’s possible to detect early warning signs

  1. seismic detectors : underwater earthquakes
  2. DART ( deep ocean assessment and reporting of tsnuami) seabed sensors and surface boyes monitor sea levles and pressure changes. The info detected estimates the size and direction of tsnami.