Science is Magic

63

Ta-da! When you reveal

the chosen coin, your

3 friend will be amazed.

SCIENCE

PART...

THE

A coin heats up in your friend’s hand

because of something called conduction.

If you could look through a microscope at the tiny

particles called atoms in the metal, you would see

that the hot ones are jiggling around a lot while the

cold ones are only jiggling a little. Heat is just the

jiggling of atoms, and conduction is a way for heat

to move through and between things.

The warm jiggling atoms in your friend’s hand

knock into the atoms in the metal causing them to

jiggle too, making them warm. These warm metal

atoms knock into other atoms and particles in the

metal, causing them to jiggle, and that’s how heat

spreads throughout the coin.

This hot atom

is jiggling a lot.

This cold

atom is not

jiggling

much yet.

THIS

ON

E

!

I

THINK^ IT’S...

I CAN’T

(^) BE
L
IE
V
E
(^) I
T
!
The jiggling
spreads to
nearby
atoms.
US_062-063_Guess_the_coin.indd 63 12/09/2018 15:50