Which of the following is an ice formation?

• A. Thermal Crack
• B. Water level
• C. Wind
• D. Thickness

Answer: (A)

Ice formations are visible features on the ice surface that arise from the ice itself under conditions like temperature changes and movement. A thermal crack is a real ice formation because it’s a visible fracture that forms as the ice expands and contracts with changing temperatures, creating cracks across the surface. These cracks indicate structural weaknesses and are something you can see on the ice, which is why they’re considered an ice formation. The other options aren’t formations: water level is just a measurement of surface height, wind is a force that can shape ice but isn’t a feature on the ice, and thickness describes how thick the ice is rather than a surface formation.