SKDUPJ

Secret Bells





You need:
scissors
string
wire hanger
table (or a wall, or a door)
metal spoon





You can also try





fork
potato peeler
metal spatula
cake rack





What to do:





1. With your scissors, cut a piece of string about 21 cm long. (Grown-ups should cut a piece about 121 cm long.)
2. Hold the two ends of the string in one hand. The rest of the string will make a loop.
3. Lay the loop over the hook part of the hanger. Push the two ends through the loop, and pull them all the way through the other side. (This is easier to undo than a knot.)
4. Wrap the loose ends of the string two or three times around the first fingers on each hand.
5. Swing the hanger so it gently bumps against the leg of a table, or against a door. What did it sound like? Probably not much.
6. Now put your hands over the openings of your ears. (Don’t put your fingers in your ears!) Hold your hands tight to the sides of your head. Lean over and gently bump the hanger again.
7. Wow! Now what does it sound like?
8. Want to hear what a spoon sounds like? Unwrap your fingers, then pull on the loop end of the string. The whole string will come off the hanger, and you can reloop it around the spoon.
Try this with other things from your kitchen.







Laman web rujukan:www.exploratorium.edu/science_explorer