Question 26
Change of State and VapoursA thin wire with heavy weights attached to boths ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called.
- A.fusion
- B.sublimation
- C.condensation
- D.regelation.
Show the answer and explanation
Answer: D (regelation.)
Explanation
Pressure under the wire lowers the melting point so the ice melts there; the water refreezes above the wire once the pressure is removed. This is regelation.