❓ why
Why do landslides become more likely after heavy rain or earthquakes?
NatureNatural Disasters
Quick Answer
Rain saturates the ground and earthquakes loosen slopes, so gravity can more easily pull material downhill.
The Full Story
Slopes remain stable only while friction and internal strength are greater than the downslope force of gravity. Heavy rain can soak into soil and rock, increasing weight and reducing friction, while earthquakes can shake loose unstable material and create cracks. Together, these processes can trigger landslides, rockfalls, and debris flows. The 2015 Nepal earthquake, for example, caused many landslides in steep Himalayan terrain.
Key Facts
1.Water reduces slope stability
2.Earthquakes can loosen rock and soil
3.The 2015 Nepal quake triggered many landslides
YouTube Angle
Suggested video title for this topic:
"Why do slopes fail after storms and earthquakes?"