Question

During severe winter in the low temperature
zones of the world, the superficial parts of the
lakes are frozen, leaving water below. The
freezing at the bottom is prevented because:
1) The conductivity of ice is low
2) The water has large specific heat
3) The water has large latent heat of fusion
4) The temperature of the earth at the bottom of the
lake is high.​

Answer 1

Answer:

1)

Explanation:

This is because as if the water will have low conductivity it will make the water freeze

Answer 2

Answer:

Solution

The concepts involved in this complicated phenomena are low conductivity of ice and anomalous expansion of water (water density is highest at

4

o

C

).

When initially, the top layer of ice is formed on account of high exposure to low temperature, this ice sheet cuts off heat transfer from water (high temperature) to air (low temperature) on account of low conductivity.

Explanation: