General Knowledge
Survive a Heat Wave Quiz
Record highs, heat domes, and hydration — could you survive an extreme heat wave?
Record highs, heat domes, and hydration — could you survive an extreme heat wave?
Scientists consider a wet-bulb temperature of 35 °C (95 °F) the theoretical upper limit of human survival — and climate change is pushing more regions toward that threshold every decade. This 50-question quiz tests whether you know how to stay alive when the mercury spikes, from recognizing heatstroke symptoms to understanding why a fan can actually make things worse above 95 °F.
Heatstroke occurs when your core body temperature rises above 104 °F (40 °C) and your thermoregulation system fails. Symptoms include confusion, hot dry skin, rapid pulse, and loss of consciousness. Without immediate cooling and medical treatment, mortality ranges from 10 % to 80 %.
Wet-bulb temperature combines heat and humidity into a single reading that reflects how effectively the human body can cool itself through sweating. At a wet-bulb temperature of 35 °C, evaporative cooling stops entirely, making prolonged outdoor exposure fatal even for healthy people in the shade.
When air temperatures exceed about 95 °F (35 °C), fans blow hot air over your skin faster than your sweat can evaporate, which can actually accelerate dehydration and raise your core temperature. In extreme heat, wetting your skin or using air conditioning is far more effective.