Question

which process could cause ice to form a thin layer over a lake?
○ freezing
○ sublimation
○ evaporating
○ condensation

Explanation:

To determine the process that forms ice over a lake, we analyze each option:

• Freezing: The process of a liquid turning into a solid due to a decrease in temperature. Water (liquid) in the lake freezes into ice (solid) when the temperature drops below 0°C, which forms the ice layer.
• Sublimation: The transition of a solid to a gas without passing through the liquid state (e.g., dry ice to CO₂ gas), which is not related to forming ice from water.
• Evaporating: The process of a liquid turning into a gas (e.g., water to water vapor), which would reduce the water in the lake, not form ice.
• Condensation: The process of a gas turning into a liquid (e.g., water vapor to liquid water), which is not the process of forming ice (a solid) from liquid water.

So, freezing is the correct process.

Answer:

A. freezing