1.5 Tsunamis Flashcards
what causes a tsunami?
(4 points)
an earthquake under the sea along a subduction zone
under sea volcanic eruptions
landslides
meteorite
how high can a tsunami wave be?
up to 30m
what are the impacts of a tsunami?
(5 points)
they are very destructive
coastal flooding destroys buildings, infrastructure and crops
small islands can be completely destroyed
contamination can lead to disease outbreaks
death from drowning, building collapse and disease
how can tsunamis be predicted?
(2 points)
occur after an earthquake
early warning systems - DART
what was the magnitude of the earthquake causing Boxing Day Indian Ocean tsunami?
9.0
when was the Boxing Day tsunami?
26th December 2004
what caused the Boxing Day tsunami wave to be so destructive?
the sea floor was uplifted by 15m
how many people were killed as a result of the Boxing Day tsunami?
290,000
how many countries were affected by the Boxing Day tsunami?
14
how many people were made homeless as a result of the Boxing Day tsunami?
1.7 milliion
