Avalanches occur when a layer of snow cannot support the weight above it, causing it to collapse and slide down a slope. This can be triggered by factors like heavy snowfall, rapid temperature changes, or disturbances such as human activity.
MCQs
1. What can trigger an avalanche?
A) A sunny day
B) A loud shout
C) Heavy rainfall
D) All of the above
2. Which layer of snow is most likely to slide and cause an avalanche?
A) The top layer
B) The middle layer
C) The bottom layer
D) The layer closest to the sun
3. What is one of the main factors that determines the stability of snow on a slope?
A) The color of the snow
B) The temperature of the air
C) The steepness of the slope
D) The number of trees
4. How can human activities contribute to the occurrence of an avalanche?
A) Walking or skiing on unstable slopes
B) Singing loudly
C) Taking pictures
D) Eating food outdoors
Fill in The Blanks
Choose from These Words: slides, avalanches,avalanche-prone.
1. Avalanches occur when a layer of snow collapses and __________ downhill.
2. Changes in temperature, snowfall, and the slope of the mountain can all contribute to the occurrence of __________.
3. It is important to be cautious when skiing or snowboarding in __________ areas.
True / False
1. Avalanches only happen in the winter (True / False)
2. Avalanches are always caused by humans (True / False)
3. Avalanches only happen on steep slopes (True / False)
4 It is safe to play or ski in areas where avalanches have occurred before (True / False)
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