To demonstrate the water cycle. Things needed : a wide-mouthed jar, transparent plastic wrap, elastic hand, water, soil, sand and small rocks, a bottle cap. Procedure : Fill the jar as shown in picture. Cover the jar with a transparent plastic wrap and secure the plastic wrap in place with an elastic band. Place the jar out in the open. Observe how the water-cycle works and then write down your observations.
Answers
Answer:
Objective: You and your child will use household items to create a miniature model
that will demonstrate the process of the water cycle.
Materials:
● a large bowl (a clear one if you have it to make observations easier)
● a sheet of clear plastic wrap
● a dry cup that will fit inside the bowl (a coffee mug will work)
● a long piece of string or large rubber band
● water
Instructions:
1. Pour water into the bowl until it is about ¼ full.
2. Place the cup in the center of the bowl. Be careful not to splash any water into it.
3. Cover the top of the bowl tightly with the plastic wrap.
4. Tie the string or rubber band around the bowl to hold the plastic wrap in place.
5. Place the bowl in a sunny place outside.
6. Now it’s time to wait and watch!
What did we learn?
Over time you should be able to observe the water cycle in progress! The water in the
base of the bowl represents the ocean. Over time the heat from the sun will cause this
water to evaporate. The water vapor will rise and condense on the surface of the plastic
wrap, which represents the clouds. This will appear as moisture just like a cold glass of
water on a hot summer day. As the moisture builds up, water droplets should form and
precipitate, or fall like rain back into the bowl.