__________ rocks are less affected by chemical weathering.
Metamorphic
Igneous
Sedimentary
None of these
__________ may be exposed to earth's surface through continued erosion.
Sills
Dykes
Batholiths
Necks
___________ rocks are the first to be formed.
___________ have higher percentages of oxides of denser elements and silica content varies between 40 to 60 percent.
Acid igneous rock
Basic igneous rock
Extrusive igneous rock
Intrusive igneous rock
___________ are hard and resistant to erosion.
Igneous rocks
Metamorphic rocks
Sedimentary rocks
____________ are aggregates of mineral elements.
Rocks
Mountains
Plains
___________ are smooth,crystalline and fine grained.
Intrusive igneous rocks
Extrusive igneous rocks
___________ are chiefly compsoed of granite and commonly form the core of mountain ranges.
Laccoliths
Basalt and dolerite are the examples of ____________.
____________ rocks do not contain fossils.