(music plays)

In animation, a shooting star flies in space past planet Earth as a title appears: I wonder... WHY?

A boy pops up on screen. He has long dreadlocks. His name is Brayden.

Brayden says HI, MY NAME IS BRAYDEN.
MY QUESTION IS, I WONDER
WHY SNOW IS SO FLUFFY
IF IT'S A SOLID?

Now Kevin Donker appears on screen. Kevin is a perimeter scientist.

Kevin says THAT'S A GREAT
QUESTION, BRAYDEN.
IF YOU CAN IMAGINE
UP IN THE SKY
WE HAVE THESE CLOUDS.
AND CLOUDS ARE THESE
BIG, SWIRLING BUNDLES
OF LITTLE DROPS
OF WATER.
WHEN THE TEMPERATURE
GOES BELOW ZERO,
THE LITTLE DROPS OF WATER
START GROUPING TOGETHER,
AND THEY START TO
CRYSTALLIZE.

In animation, a thermometer marks temperatures below zero and little droplets of water stick together forming a snow flake.

Kevin says WHAT HAPPENS WHEN
THEY CRYSTALLIZE
IS WE GET SNOWFLAKES.
THE SNOWFLAKES WILL
FALL FROM THE SKY
ONTO THE GROUND, KIND OF
LIKE FEATHERS FALLING.
THERE'S SO MUCH AIR
BETWEEN THE FEATHERS
IT MAKES THEM
SOFT AND FLUFFY.
NOW, YOU KNOW WHAT
I LIKE TO DO?
I LIKE TO ROLL UP THE SNOW
INTO THESE BIG BALLS
AND SQUISH ALL
THE AIR OUT AND MAKE
AS BIG OF A SNOWMAN
AS I POSSIBLY CAN.

A snowman with Kevin’s face appears on screen on a snowy day.
[laughing]