Moraines are the rock debris and ice which gets accumulated on the sides, top and foot of a moving glacier. These debris and glacial till are formed due to the frictional force which acts on the moving glacier.
Block mountains are created when large areas or blocks of earth are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben. The Great African Rift Valley (valley floor is graben), The Vosges mountain in Europe is an example of block mountain.
Rome is called as the eternal city because this city had long and influential art, architecture and culture which Roman people thought would last forever.
The Greenland is the world's largest island. It belongs to the North American continent but it is an autonomous province of Denmark. In other words, Greenland is administered by Denmark.
The study of vibration inside Earth's crust which are caused due to natural or artificial sources such as earthquakes or explosions is called seismology. The scientists who study such vibrations are known as the seismologists.