00:00:03
STEVE SPANGLER: So I woke up
this morning thinking about
00:00:05
this, a little Alka-Seltzer
and some film canisters.
00:00:12
Actually, it's something I
did in my son's fourth
00:00:14
grade class last week.
00:00:18
Imagine 25 kids dropping
Alka-Seltzer into this,
00:00:22
another one of these like
this, and then just
00:00:25
letting them go.
00:00:29
STEVE SPANGLER: Bam!
00:00:34
Why can't they all
go at one time?
00:00:36
Now that was a cool one.
00:00:39
See, what's stupid about that is
that, if you pop it in that
00:00:41
direction, it just throws
water everywhere.
00:00:44
And this is why kids
like this so much.
00:00:46
So here I was in my son's
fourth grade class.
00:00:49
And I'm showing them Newton's
law, because they're going to
00:00:51
do this whole unit on rockets.
00:00:53
And we're doing, for every
action, there's an equal and
00:00:54
opposite reaction.
00:00:55
And while I'm trying to show
them that, kids are wanting to
00:00:59
find out what these are, because
they don't know what
00:01:01
these little things are.
00:01:02
And I'm calling them film
canisters, because that's what
00:01:04
Little did I realize that, if
you're in fourth grade now,
00:01:06
you've probably never
seen your parent use
00:01:09
35 millimeter film.
00:01:10
You have no idea that it's
a film canister.
00:01:13
This week, it's all about
flying film canisters.
00:01:15
I want to show you some cool
things to be able to do with
00:01:17
them, a way to be able to launch
a bunch of them at one
00:01:20
time, and what happens if you
take it to an extreme level.
00:01:22
While this is fun, what
if you could do this
00:01:24
with a trash can?
00:01:26
So here's everything you need,
just some Alka-Seltzer.
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You can find the
generic stuff.
00:01:30
It's an effervescent tablet.
00:01:31
You're going to need to have
some film canisters and, of
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course, some water.
00:01:34
The cool thing about this is
that you get the reaction
00:01:37
without using vinegar
and baking soda.
00:01:39
So your traditional vinegar and
baking soda would work in
00:01:42
here just fine, but this means
that the Alka-Seltzer tablet
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