Geography

How Tsunamis Work

The immense swell of a tsunami can grow up to 100 feet, hitting speeds over 500 mph — a treacherous combination for anyone or anything in its path. Alex Gendler details the causes of these towering terrors and explains how scientists are seeking to reduce their destruction in the future.

Earthquakes: Everything you need to know – Sample Answer

Earthquakes are caused by structures and processes that have resulted from the operation of the tectonic cycle. Earthquakes are sudden and violent shaking of the earth’s surface. The plates of the earth move due to the movement of convectional currents in the mantle below the crust. This is called as the endogenetic force as… Continue Reading →

Formation of Igneous Rocks – Sample Answer

Igneous rocks are formed when magma is cooled, either inside the earth’s crust or on the earth’s surface. Plutonic igneous rocks are formed when molten rock cools and hardens below the surface e.g. granite. Volcanic igneous rocks are formed when molten rock cools and hardens on the surface, e.g. baslat…. Continue Reading →