UGC NET Exam 2022: Geomorphic Hazards

Questions and Answers

A geomorphic hazard is a natural hazard that originates from the lithosphere, including events like volcanic eruptions, earthquakes, and landslides.

Volcanic eruptions

Floods (correct)

Earthquakes

Landslides

Human activities can exacerbate geomorphic hazards.

A landslide is a large mass of rock that suddenly moves downwards from a steep slope. Signup and view all the answers

weak or sensitive materials Signup and view all the answers

Mining Signup and view all the answers

False Signup and view all the answers

Weak materials and tectonic uplift. Signup and view all the answers

Study Notes

Natural hazards pose threats that negatively affect the environment and human activities.
Geomorphic hazards originate from the lithosphere and include volcanic eruptions, earthquakes, tsunamis, and mass movements such as landslides and avalanches.
These hazards are influenced by human activities, increasing their impact.
The consequences of geomorphic hazards include loss of life, destruction of infrastructure, disruption of communication lines, and humanitarian crises.

Landslides involve the sudden downward movement of a large mass of rock from steep slopes.
Classified by factors such as movement type, material nature, and lubrication presence.
Encompasses various mass movements of rock waste, soils, and ice.

Geological Causes: Involves weak or sensitive materials like fissured rocks that contribute to instability.
Morphological Causes: Tectonic or volcanic uplift is significant in unstable regions; fluvial and glacial erosion also play a role.
Human Factors: Activities like mining, irrigation projects, deforestation, excavation, and water leakages are major contributors to landslides.