Question

Write scientific reason.

Even the wire moves through the ice slab , the ice slab does not break.

Answer 1

1. When the wire with weights attached to its two ends is placed on the ice slab, its weight acts along very small area of contact between the wire and ice.
2. As a result, pressure gets applied on that part of ice-slab.
3. This lowers the melting point of ice below 0 °C and ice is converted into water.
4. The wire cuts through water and shifts downward.
5. As the wire displaces, pressure applied by wire on ice slab vanishes and its melting point is restored to 0 °C causing freezing of ice.
6. In this manner, due to regelation wire moves through the ice slab completely without breaking it.