A boy dives into an indoor swimming pool. He notices that the water seems colder the deeper he moves below the surface. This happens because of convection. Which statement is correct?
- ACold water is more dense than warm water so it sinks to the bottom of the pool.
- BWarm water is more dense than cold water so it rises to the surface of the pool.
- CThe molecules in cold water have more kinetic energy than the molecules in warm water so they move to the bottom of the pool faster.
- DThe molecules in warm water are closer together than the molecules in cold water so they rise to the surface of the pool.