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)

Question

Responses

They will become more dense and sink.
They will become more dense and sink.

They will become less dense and sink.
They will become less dense and sink.

They will become less dense and rise.
They will become less dense and rise.

They will become more dense and rise.

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, which decreases their density. This causes the warmer, less dense water to rise, allowing cooler, denser water to sink.