A lake starts freezing because of the cold atmosphere. It will first freeze
Correct answer: C. At the top surface
- A. At the bottom
- B. ln the middle pan
- C. At the top surface
- D. Uniformly throughout the water body
Explanation
Water cools from the surface, and the colder, denser water sinks until it reaches about 4°C. Further cooling makes surface water less dense, so ice forms first at the top and then insulates the water below.
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