A mountaineer climbing on the Everest, experienced the
following facts. Explain each fact with the scientific reason
: (1) He found fishes alive below the ice. (2) Time required
for cooking was more as he went higher. (3) He saw many
times cliffs falling suddenly. (4) He saw tubes carrying
water broken.
Answers
Answer:
(1) Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds. ... This irregular expansion of water is called anomalous expansion.
(2) Higher altitudes means lower atmospheric pressure and thus lower boiling point. But that doesn't mean that food can be cooked at lower temperatures easily. ... So, at higher altitude, food needs to be cooked for a longer time due to the lower in boiling point of water.
(3) Altitude sickness occurs when you cannot get enough oxygen from the air at high altitudes. This causes symptoms such as a headache, loss of appetite, and trouble sleeping. It happens most often when people who are not used to high altitudes go quickly from lower altitudes to 8000 ft (2500 m) or higher.
(4) s the atmospheric pressure is low at higher altitudes is compared to that sea level which causes decrease in boiling point as pressure is inversely proportional the temperature. So, water does boil below 100
∘
C at higher altitude