Question

A cook places a pot of water over a flame on a stove. What will happen to the water molecules near the surface of the water? (1 point) Responses They will become more dense and rise. They will become more dense and rise. They will become less dense and rise. They will become less dense and rise. They will become more dense and sink. They will become more dense and sink. They will become less dense and sink.

Answer 1

The correct response is: They will become less dense and rise.

As the water is heated, the molecules near the surface gain energy and move faster, causing them to spread apart and become less dense. This decrease in density allows them to rise through the cooler, denser water below.