Step 2: Teach Lesson
Tell the student, Today we will be learning about the Water Cycle.
Place a water bottle filled with ice and water on the table. Observe what happens to the outside of the water bottle. Discuss what
causes the bottle to "sweat".
Demonstrate and review the water cycle using a commercial water cycle chamber of your own model.
Teacher: Use a knife to poke a starter hole in the top portion of the both 2-liter bottles ( where it starts to straighten out).
Instruct the student to utilize the starter hole to cut off the top portion of the bottle with scissors. Tell the student to look a the diagram
Instruct the student to place a cup of very warm water in the bottom of the pop bottle (Use hot water to speed the evaporation
Close the chamber with the top of the bottle inverted.
Place four or five ice cubes in a plastic bag and set the ice cube bag on top of the container.
Place the light source (lamp) within a few inches of the chamber to simulate heat energy from the sun. Be sure the area around the
water is completely in the light.
Notice how the top begins to fog. Remind the student that the water vapor evaporating provides the moisture in the air allowing
condensation to occur.
Have the student complete the worksheets in Step 3.
After a couple of hours, have the student revisit the experiment. The student will then notice that the droplets on the ceiling of the
bottle are so large that they begin to drip, simulating precipitation. Have the student record the findings.