Interior of the Earth is divided into 4 main layers Crust, Mantle, Outer core &
Inner core. Earthquake is sudden energy release from the Interior of the Earth
Here is the List of Major Straits of the World. A strait is a narrow waterway that connects two larger bodies of water and lies between two land masses.
Our Solar System is the gravitationally bound system of the Sun & objects that orbit it. Formation of our Solar system started about 5.6 billion years ago.