Q. Consider the following statements regarding the avalanche:
1.It is defined as a slow movement of snow down a mountain slope.
2.Increased air pressure in the atmosphere is one of the causes of avalanche.
Which of the statement(s) given above is/are correct?
Answer: D
Notes:
Explanations –
Statements 1 and 2 are incorrect. An avalanche is not a slow movement of snow but a rapid and often sudden sliding of a mass of snow, ice, and debris down a mountain slope due to instability in the snowpack. Increased air pressure in the atmosphere is not a cause of avalanches. Instead, factors like heavy snowfall, weak snowpack layers, steep slopes, temperature changes, or external triggers (e.g., earthquakes or human activities) are the primary causes of avalanches.
Source: The Hindu
