How Water Changes
S4E3 Students will differentiate between the
states of water and how they relate to the water
cycle and weather.
a. Demonstrate how water changes states from solid
(ice) to liquid (water) to gas (water vapor/steam) and
changes from gas to liquid to solid.
b. Identify the temperatures at which water becomes a
solid and at which water becomes a gas.
Created for TCSS
Earth’s water exists in
three states: liquid water,
solid ice, and a gas that
we call water vapor.
Ice is water in its solid state.
Ice forms when heat is
removed from the liquid water.
When temperatures fall below
32◦ F (0◦C), liquid water will
freeze and becomes ice.
Water can also take the form
of a gas. Water in the gas
state is called water vapor.
Water vapor is part of the air,
but you cannot see it. It forms
when HEAT is added to the
liquid water.
When liquid water’s
temperature is raised to
212◦F (100◦C), you can
observe water vapor.