Question

The negative slope of water's fusion curve explains which real-life phenomenon?

Options

• Food cooking faster in a pressure cooker

• Fog formation in the morning

• Ice skating, the blade's pressure melts ice slightly to reduce friction

• Snow forming at high altitudes

Answer 1

Ice skating, the blade's pressure melts ice slightly to reduce friction

Explanation:

The narrow blade of an ice skate exerts high pressure on ice, which slightly lowers the melting point of ice and creates a thin liquid layer, this allows the skate to glide smoothly.