The video demonstrates regelation, a process where pressure turns ice into water, which refreezes once the pressure is removed. The experiment uses a guitar string weighted with water bottles to cut through ice, showcasing regelation. Despite being conducted in warm Sydney, the experiment successfully demonstrates the concept, with the ice remaining solid after the string passes through.

What is the purpose of using a high E string in the regelation experiment?

• It is more flexible than other strings.

• It is cheaper than other strings.

• It is thinner than a G string, which is important for the experiment.

• It is stronger than other strings.

What is the main principle demonstrated in the regelation experiment?

• Ice melts under pressure and refreezes when the pressure is removed.

• Ice melts at temperatures above 0°C.

• Ice expands when frozen.

• Water turns into ice when cooled.

Why was the experiment conducted outside in Sydney?

• To avoid indoor mess.

• To use natural sunlight for the experiment.

• To test the experiment in a warmer environment.

• To ensure the ice melts quickly.

What was the outcome of the experiment?

• The wire cut through the ice, but the block remained solid.

• The wire broke during the experiment.

• The ice melted completely.

• The ice did not change at all.

What does the experiment demonstrate about the properties of ice?

• Ice is unaffected by pressure.

• Ice cannot be melted by pressure.

• Ice can be compressed into a liquid and then revert to a solid.

• Ice is a poor conductor of heat.