Tsunami Flashcards
1
Q
What is a tsunami?
A
A series of waves with a very large wavelength.
2
Q
What are tsunami caused by?
A
Sudden mass movement in the earth’s crust under the ocean as a result of earthquakes and landslides.
3
Q
what happens as the waves get nearer to land and encounter shall depth?
A
Their speed reduces, causing the wave to rise potentially disastrous heights capable of overwhelming sea defences and causing significant damage inland.
4
Q
What are the effects on ships?
A
Ships at sea may not notice the tsunami wave but, should a wave hit the shore, and a port area in particular, serious damage is likely.
Should a tsunami warning be in place, ships should, if time permits, head out of port into deeper water.
