Landforms and their Evolution — Important Questions

Circular depressions formed by stream erosion

Potholes are more or less circular depressions in rocky stream beds formed by stream erosion and abrasion of rock fragments.

A broad, low to high cone-shaped deposit

An alluvial fan forms when streams flowing from higher levels break into foot slope plains of low gradient, depositing coarse load in a broad cone shape.

Hanging icicle-like formations in limestone caves

Stalactites are formations that hang from cave ceilings, typically broad at the base and tapering towards the free end, formed by calcium carbonate deposition.

Masses of ice moving slowly due to gravity

Glaciers are masses of ice that move slowly down slopes or spread over land surfaces, primarily driven by the force of gravity.