Tsunamis (Earthquake sub topic) Flashcards
1
Q
what percentages of creation
A
90% earthquakes
5% underwater volcanoes
2
Q
describe a tsunami
A
a wall of water that has decided its high tide is 2km further inland
3
Q
how is a tsunami created
A
an earthquake occurs, releasing seizemic energy which creates a wave.
4
Q
explain a tsunamis amplitude and speed over its lifetime
A
amplitude = large on the beach and small at epicentre
speed = large at epicentre and small at beach
5
Q
what effects the size of the tsunami
A
the size of the earthquake
the depth of the shoreline
costal shape - esturies, headlands and bays
6
Q
A
