Tsnuamis Flashcards
What is a tsunami?
A tsunami is a giant sea wave travelling at a high speed.
How is a tsunami created?
Tsunamis are usually triggered by an earthquake, but could also be a volcanic eruption or an example of a mass movement like a landslide.
What happens during an tsunami?
The entire depth of sea water is displaced and in motion.
Is a tsunami a primary or secondary effect of an earthquake?
A tsunami is a secondary effect of an earthquake.
What is the difference in height between a normal wave and a tsunami wave?
A normal wave height is 2m.
A tsunami wave height is 1m out at sea and 30m at the coast.
What is the difference in crest between a normal wave and a tsunami wave?
A normal crest is 100m apart
A tsunami crest is 200m apart
What is the difference in wave speed between a normal wave and a tsunami wave?
Normal wave speed is 30kph
Tsunami wave speed is 800kph
