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Khel-Khel me

Fun Tricks
Fun Tricks

that you
that you

can do
can do

at home
at home

Ayat Alam
VI A, Railway
Colony Tuglakabad

01 A Can That Can “Walk”
Take an aluminum can. Inflate a balloon and tie a knot at the
end. Rub a napkin on the balloon. Put the balloon near the
can, it will start moving toward the balloon.

Trick behind it?
When we rub the balloon with a napkin, the balloon gets a negative
electric charge of several thousand volts. When we put the balloon near the
can, electrostatic induction affects the molecules in the metal. The outside of
the can gets a positive charge, so it is drawn toward the balloon and starts moving in that
direction.

02 Egg Into Bottle
Take a glass bottle that has a mouth slightly smaller than an egg. Put some hot
water into the bottle, shake it vigorously and empty the bottle.
Peel a soft-boiled egg and put it on the mouth of the bottle.
Leave it there for a while and it will get sucked inside.

Trick behind it?
The vapor from the hot water drives the air out of the bottle. Once the
egg seals the top of the bottle, the air can’t get back in. As the water
vapor cools, it turns back into water, causing the pressure inside the
bottle to drop. The higher pressure of the outside air pushes the egg into the
bottle.

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