Tsunami

Question 1

how are tsunamis created

Answer 1

Most tsunamis are created via large underwater earthquakes along the subduction zone

Question 2

what does energy released by earthquakes cause to the seafloor

Answer 2

Energy released during the e/q causes the seafloor to uplift - displacing a water column above which forms tsunami waves which are normally around 3 m tall, however some can get up to 30 m tall.

Question 3

how fast do tsunamis travel

Answer 3

up to 500mph

Question 4

how are tsunamis destructive to the landscape

Answer 4

Large tsunamis can travel inland for several miles - sweeping away buildings, trees, bridges and people

They also wash away the soil- undermining the foundations of buildings, bridges and roads, uprooting trees and destroying farmland

They can completely destroy/change landscapes for example small islands are totally destroyed

Question 5

impacts of tsunamis on people

Answer 5

Most tsunami-related deaths are due to drowning and collapsing debris crushing them, there is also inland flooding which brings sewage, contaminating water, food etc leading to disease such as cholera.