Rain Cloud in a Jar  


1 large empty jar, 1 cup of very hot water, 1 metal lid or pie tin to cover the jar, 1 empty tin can full of ice cubes, 1 flashlight.


Step 1: Pour about 1/2 cup of hot water into the jar and cover the jar so that the steam is captured inside the jar.

Step 2: Place the tin can on top of the jar and fill it with ice. Students will observe and record what is happening inside the jar. A cloud should appear inside the jar.

Step 3: Darken the room a little and use the flashlight to depict the sun illuminating the cloud. Observe and record what happens to the cloud inside the jar.

Students Questions:

Write a hypothesis regarding what will happen in the jar and why.



What did you observe happening inside the jar?



Was the hypothesis correct? If yes, why? If no, why not?



(If you need more space use the back of this handout.)

Answer page.

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