1 Many houses were destroyed by the earthquake which measured 6.5 on the Richter scale.
2 An earthquake on the seabed caused the tsunami.
3 Water from the flood filled the streets and damaged many houses.
4 They watched the tornado travel over the land and lift cars from the roads.
5 The drought caused plants and animals to die from a lack of water.
6 After the (volcano) eruption lava came flowing down the mountain.