Question

When a kettle is placed on the stove and water begins to boil, the hotter water at the bottom begins to rise and the cooler water above it begins to sink. What do we know about the relationship between the hotter water and the cooler water?
A. The hotter water is less dense.B. The hotter water has more radiation.C. The cooler water is less dense.D. The cooler water has more radiation.

Answer 1

a is the answer  the hotter water is less dense.

Answer 2

I think the correct answer from the choices listed above is option A. The fact that we know about the relationship between the hotter water and the cooler water would be that the  hotter water is less dense. Hope this answers the question. Have a nice day.