I WONDER - Where Do Avalanches Occur?

Avalanches are most common on mountain slopes but can occur on any snow-covered incline. They are likely on slopes with angles between 30 and 45 degrees, where snow can accumulate and become unstable. However, avalanches can also happen on gentler or steeper slopes depending on factors like snow conditions, terrain features such as vegetation and rocks, and weather patterns that influence snow stability.

Where are avalanches most commonly found?

• In deserts

• In urban areas

• On mountain slopes

• On flat plains

What is the typical slope angle range where avalanches are likely to occur?

• 10 to 20 degrees

• 45 to 60 degrees

• 20 to 30 degrees

• 30 to 45 degrees

Why are slopes with angles between 30 and 45 degrees prone to avalanches?

• Because snow can accumulate and become unstable

• Because they are flat and safe

• Because they have no vegetation

• Because they are too steep for snow to settle

What factors can influence the occurrence of avalanches on gentler or steeper slopes?

• The presence of wildlife

• Only the amount of snowfall

• Only the temperature

• Snow conditions, terrain features, and weather patterns

Which terrain features can affect snow stability and avalanche risk?

• Sand dunes

• Rivers and lakes

• Vegetation and rocks

• Buildings and roads