5.

Thread the twisted end through the hole in the plastic lid, and pull the wire through so it fits snugly in< the lid.

Testing Your
“Scope”

1. Now let’s see if the electroscope works. Comb your hair briskly, and bring the charged comb near the loop. Watch the leaves. If they swing out, the scope works. If nothing happens, check to make sure the leaves are hanging straight and are free to move on the wire. Try again.
2. OK, the scope appears able to detect a charge. But can it hold a charge? Find out by recharging your comb, only this time pass it gently along and against the loop. If the leaves stay out when you remove the comb, you’re in business.
3. To discharge your electrocope, simply touch the loop with your finger. The leaves should drop immediately.

So your electroscope works. But do you know WHY? This is what science is all about, trying to make sense out of what we see around us. That’s why scientists develop theories, or models, to help explain what they observe. Theories may have to be changed if new facts are discovered, but that’s also part of science.

6.

Form a loop at the top with the twisted end.

7.

Hang the foil leaves on the two hooks of the wire. Be sure that the leaves hang straight, are closetogether, and movefreely. Enlarge the holes if necessary

8.

Put the lid assembly on the jar and tape it in place.