Science is Magic

12

SCIENCE

PART...

THE

The ink inside most pens is sticky,

but not in a dry–erase marker.

With a normal pen, you don’t want your writing

to get rubbed off or smudged. With dry–erase

markers, you can wipe the ink off easily. These

pens have a special chemical in them that forms

a slippery layer between the ink and the writing

surface. Once the ink has dried, it can be lifted

off in one piece.

WHI TEBOARD

AND ERASER

Draw a nice,

thick balloon on

a plate with dry–

erase markers.

1

YOU WILL NEED

Two dry–erase markers

(preferably new)

Dinner plate

Jug of water

Slowly pour water

onto the plate until

(^2) the balloon is covered.
T
HE
(^) F

LOATING

BA

LL

OON

The balloon will

start to lift away

from the plate.

US_012-013_The_floating_balloon.indd 12 12/09/2018 15: