The valleys which drain in the same direction as the original consequent drainage but at the lower topographic levels and have developed with respect to new base levels are known as

• Resequent

• Obsequent

• Insequent

• Subsequent

The concept of 'base level erosion' was proposed by

• Davis

• Malott

• Johnson

• Powell

ASSERTION (A) : The velocity of moving ice increases with steepness of slope of the area and thickness of glacial ice.

REASON (R) : The velocity decreases to the sides owing to lesser depth of ice and friction against the valley walls and the bottom floor.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true , but (R) is false.

• (A) is false , but (R) is true.

The normal cycle of erosion is associated with

• Marine erosion

• Wind erosion

• River erosion

• Glacial erosion

Which of the following groups of scholars stressed the role of lateral erosion by streams in the formation of pediments ?

• Mc Gee , Paige , Blackwelder

• Mc Gee , Blackwelder , Johnson

• Paige , Blackwelder , Johnson

• Paige , Johnson , Lawson

The most abundant rock type in the earth's crust is 

• Metamorphic

• Secondary rocks

• Igneous

• Sedimentary

Which one of the following types of clouds appears at the highest level in the sky ?

• Alto-cumulus

• Cirro-cumulus

• Cumulo-nimbus

• Strato-cumulus

The statement that "Egypt is the gift of the river Nile" is attributed to

• Aristotle

• Herodotus

• Strabo

• Seneca

Who among the following pleaded that history be treated geographically and geaography be treated historically ?

• Homer

• Thales

• Hecataeus

• Herodotus

Who among the following Arab scholars made corrections to Ptolemy's book ?

• Al-Masudi

• Al-Idrisi

• Ibn-Khaldun

• Ibn-Batuta