Teacher Aldo stands in the lab.

Teacher Aldo is in his thirties, with short curly black hair and a goatee. He wears glasses and a blue Homework Zone T-shirt.

He says HEY THERE, IT'S
TEACHER ALDO HERE AGAIN.
WE JUST FINISHED
AN EXPERIMENT
ABOUT
AIR PRESSURE,
WHERE WE USED THIS
GREEN BOTTLE
TO SEE HOW AIR
PRESSURE WORKS
IN ACTION, BUT I HAVE
A QUESTION.
WHAT WOULD
HAPPEN IF WE USED
A LARGER BOTTLE
OF WATER?
LET'S SEE WHAT
WOULD HAPPEN IF
WE DO THE SAME
EXPERIMENT
AND SEE IF
AIR PRESSURE WORKS
BETTER WITH THE
LARGER BOTTLE.

He puts the large bottle inside a bowl full of ices and says PUT THE BOTTLE
INSIDE THE ICE,
MAKE SURE
YOU'VE GOT IT
SURROUNDED BY
THE ICE CUBES,
AND LET'S POUR SOME
WARM WATER
IN THERE AND
SEE WHAT HAPPENS.
GOING TO PUT THE
LID ON THE
WARM BOTTLE OF
WATER - EMPTY WATER
THERE, AND LET'S
SEE WHAT HAPPENS
TO
THE SIDES.
[Bottle cracking]

Aldo says HEAR THE
CRACKING?
THAT'S THE
AIR PRESSURE
FORCING AGAINST THE
OUTSIDE OF
THE BOTTLE, AND
IT'S COLLAPSING
THE SIDES.
[Bottle cracking]
[Music playing]

He says THAT'S REAL SCIENCE
IN ACTION.
I'M TEACHER ALDO,
AND NOW YOU KNOW.