Write the following answers shortly:

Define landslide and mention the causes of landslide.

Landslides are either sudden or slow movement of rock remains down the slope. They are caused by the instability of rocks. heavy torrential rainfall, tremor etc. mostly landslides occur in hilly areas like in the Himalayan region and at the time of heavy rainfall. Uttarakhand suffers a lot from regular landslides in the rainy season, here roads blocked, properties are destroyed by landslides on regular basis.