Which one of the following is not considered to be characteristics feature of the youthful stage of an ideal normal cycle of erosion ?

• Natural levees

• Pot holes

• Gorges

• River capture

142.

Sand dunes formed as long ridges oriented at right angles to the wind direction are called

• Linear dunes

• Barchan dunes

• Transverse dunes

• Star dunes

• a-iv , b-iii , c-ii , d-i

• a-iii , b-i , c-ii , d-iv

• a-i , b-iii , c-ii , d-iv

• a-ii , b-iv , c-i , d-iii

ASSERTION (A) : Hawaii Island is a site of volcanic eruptions.

REASON (R) : Convergent plate margins are site of volcanic eruptions.

• 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.

Who stated that the slope profiles are convex , plane or concave according to the circumstances of the uplifting action ?

• Davis

• Penck

• Johnson

• Wood

The statement "The present is the key to the past" is related to 

• Catastrophism

•  Uniformitarianism

• Isostasy

• Diatrophism

The theory of plate tectonics  does not help to explain the origin and location of which one of the following ?

• Earthquakes

• Mountains

• Ocean currents

• Major sea floor features

Fiord shorelines are formed due to

• Submergence of suberially eroded coast

• Submergence of glaciated coast

• Fluvial deposition

• Marine erosion

Tsunamis are produced by

• Tides

• Cyclones

• Sub-marine earthquakes

• Shrinking of earth's crust

• a-i , b-ii , c-iii , d-iv

• aiv , b-iii , c-ii , d-i

• a-iv , b-iii , c-i , d-ii

• a-iii , b-iv , c-i , d-ii