tsunami – n. a very high, large wave in the ocean that is usually caused by an earthquake under the sea and that can cause great destruction when it reaches land

challenge – n. a difficult task or problem

inaccessible – adj. an area that cannot be reached

cousin – n. the child or an aunt or uncle

epicenter – n. the part of the ground directly above the center of an earthquake

mobile – adj. having the ability to be moved; changeable in appearance or purpose

magnitude – n. a number that shows the power of an earthquake