ROCKS

The deccan plateau is made of ---------- rock.

• granite
• basalt
• obsidian
• pumice

Igneous rocks are also called -------- rocks.

• volcanic
• sedimentary
• tertiary
• secondary

----------- is a mechanically formed sedimentary rock.

• Quartz
• Sandstone
• Gypsum
• Coal

Sedimentary rocks are prone to rapid ------------.

• erosion
• deposotion
• siltation

A pre-existing rock is referred to as ________

• Protolith
• megalith
• aerolith