The water cycle includes the processes of evaporation, condensation
11.A.1a: Describe an observed event.
12.C.2b Describe and explain the properties of solids, liquids and
12.E.2a. Identify and explain natural cycles of the Earth’s
land, water and atmospheric systems.
Use caution with ice (it can melt or stick to your skin)
Science Process Skills:
Observing, communication and touch
Clear plastic cups
Distribute plastic cups.
Before you put the ice in, feel the outside of the cup.
Place ice cubes in plastic cups and wait.
In a few minutes wipe your fingers across the outside of the cup.
What do you feel?
At first the outside is dry, but then tiny droplets of water appear and form small beads of water that cling to the
outside of the cup. As we previously learned, air contains water vapors as a
result of the evaporation process. In this case, the air surrounding the outside of the glass became cooler once the ice was
added. Cool air can not hold as much water vapor as warm air can. The water vapor from the cold air surrounding the cup transformed from a gas to a liquid. This process is called condensation.
When the water vapor in the air cools, tiny droplets of water are formed. These
water droplets collect and then form clouds. As clouds move, the water droplets bump into each other and form larger droplets
of water. When the air becomes too heavy with water droplets, the clouds get
heavy and gravity pushes the water back to earth and the in the form of precipitation.