🎴 Flashcard Mode
General Science
Card1 / 25
Mastered0
Review0
QuestionClick to flip
When upper surface of a lake is freezed, the temperature of the water beneath it is _________.
AnswerClick to flip back
A
4°C
💡 Explanation:
Water has maximum density at 4°C. When a lake freezes from the top, the ice layer insulates the water beneath. The water at the bottom remains at approximately 4°C because this is the temperature at which water is densest and sinks. The water below the ice doesn't reach 0°C or below because the ice acts as an insulator.