★Time : about an hour (including setup and cleanup)
★Cost $: suppose to be $0, if every materials are in the home.
★Area of Science and Topic: General Science / Physics
★Learning objectives (what kids should learn as a result of performing this experiment): Students will learn about the movement of air.
★Materials:
＊3 transparent plastic bottles
＊straws that can be bent
＊strong tape
＊a cutter and a pair of scissors (to make a whole and to cut)
＊glue gun
＊water
★Procedure:
1. Stick bottoms of two bottles together.
2. Cut the bottles in half. Upper half of this bottle is not used, so you can throw it away.
3. Make two hole on the lower half of the bottle we just cut so that straws can pass through. Do not glue them yet!
4. stick the cut bottle to a side of the other bottle in procedure 1.
6. Make a hole below the attached bottle. (upper bottle)
7. Make another hole on the lower part of the bottle. (lower bottle)
8. Connect the bottles with straws and glue them.
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9. On the other side of the bottle, like the way we did, make holes on the upper bottle and the lower bottle and connect them with straws and glue them.
10. Fill water in the upper bottle. (not so much that water comes out of the straw)
11. Pour water in the cut bottle and observe the water coming out!
★Tips for making the experiment work best with kids:
- Using a glue gun needs careful attention.
- The holes must be glued carefully that there is no leaking of air or water.
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