Question

you get lost in extremely cold weather. you are unable to start a fire. which of the following is the best way to survive?
a wrap up in a thermal foil blanket.
b cover yourself in snow for insulation.
c exercise vigorously to stay warm.
d change from wool to cotton clothing if available.

Explanation:

• Thermal foil blankets reflect body heat back to the body, helping to retain warmth.
• Snow is cold and would not provide effective insulation; covering in snow would likely lead to further heat loss.
• Vigorous exercise in cold weather when lost can cause sweating. Once sweating, the moisture (from sweat) can lead to more rapid heat loss when exposed to cold air (evaporative cooling), and also exhaust a person’s energy reserves which are crucial for survival.
• Wool is a better insulator than cotton. Cotton absorbs moisture (like sweat) and when wet, loses its insulating properties. Wool can still insulate even when damp.

Answer:

A. Wrap up in a thermal foil blanket.