Sean is trying to see how fast the water molecules are moving in a container of water. He observes that the molecules are moving very slowly, so the temperature must be
cool warm
A B
When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
vigorous movement
cooled
less
MORE
LESS
cool water
moving very slowly
temperature
molecules
molecules