Tsunamis Flashcards
1
Q
What is a tsunami?
A
giant sea waves generated by shallow-focus earthquakes underwater
2
Q
What are there wave-lengths like?
A
long wavelength, sometimes over 100km
3
Q
What are there wave heights like?
A
under one metre
4
Q
What speeds do they travel at?
A
over 700 km per hour
5
Q
What heights can tsunamis reach?
A
exceed 25 metres
6
Q
When a tsunami reaches land what will its effects depend on?
A
- height of waves
- distance waves travelled
- length of event
- extent of warnings
- topography
- population density
