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The rain cycle
You can reproduce the rain cycle in miniature in your classroom. Place a box of plant seedlings on the table. Place a metal tray about 35 to 40 cm above the box of seedlings and support it. Strew the top of the tray with pieces of cracked ice. Place a tea kettle or flask having water over a source of heat so that steam will issue among the seedlings and the tray. You are now ready to examine the rain cycle.
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