| 1. |
Make sure the silk is
very dry |
| 2. |
Tear tissue into very
small pieces and put them in the bowl |
| 3. |
Wash and dry your hands
thoroughly. |
| 4. |
Put the silk cloth,
bowl of tissue, and the upside down glass on the table. |
| 5. |
"On one of my travels into the remote
mountains of the Himalayas, I discovered a remarkable tribe or
people. They lived in one of the coldest places on earth, but
all they had to wear was strange silk clothing that couldn't
possibly protect them from the freezing storms." |
| 6. |
Pick up the silk from the table and hold it in
front of you. Say, "this is a piece of that special cloth.
The tribe members told me it was made from magical silk spun
by an enchange worm, named Barney." |
| 7. |
Pick up the glass and rub it inside and outside
with the silk cloth. While rubbing, say, "They also told
me that anything rubbed with the magical silk would be protected
from the mightiest storms and the freezing cold." |
| 8. |
Rub the glass for two minutes or more. Be careful
not to let your skin touch the glass. Then set the glass upside
down on the table as shown (again without touch the glass). |
| 9. |
Pick up the bowl of tissue pieces and take a
pinch of them in one hand. Hold them 8 to 10 inches above the
glass. Say, "and now, by rubbing this glass, I have made
it magical too! Any snow that touches the glass will be cast
off." |
| 10. |
Sprinkle the tissue paper "snow" onto
the glass and watch the magic. The tissue papers will first stick
to the glass and then fly off in an amazing way! |
| The Science |
|
The flying tissue to due to something called charge. There
are two types of charges: positive and negative. If two particles
have the same charge, they will repel each other. Oppositely
charged particles will attract each other. Most things around
you contain about the same number of positive and negative charges.
When you rubbed the glass with silk, the glass stole negatively
charged particles from the silk. The glass then became "negatively"
charged. The extra negative charges attracted the positive charges
in the tissue bits and caused the paper to stick to the glass.
Once the paper and glass touched, some of the negative leaked
onto the paper, so the paper and the glass repelled each other.
|
