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hurry he'll be here
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[Music]
00:00:18
soon Richie another of the devices was a
00:00:21
size monitor have you cleaned your room
00:00:24
yet I can't Mom I'm
00:00:27
busy was at the drill they had left
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durings
00:00:30
you know he'll be here any minute now
00:00:32
clean your room but Mom I'm doing an
00:00:35
experiment on chaos
00:00:37
theory
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that
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experiment it's it's Science Guy build
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the Science
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Guy build the Science
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Guy science
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[Music]
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Rules inertia is a property of M
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B the science
00:01:04
gu T 7
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Seconds the sciencey brought to you by
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the do-it-yourself science kit simple
00:01:12
experiments you can do at home new from
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DIY
00:01:16
side science is wonderful it's in
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everything we see feel and touch science
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is how we learn about the world with
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science we found out that all of our
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food comes from plants and plants make
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their own food from air water and
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sunlight by watching clouds drift and
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ice melt we discovered that matter
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exists in only three phases we found out
00:01:38
that dinosaurs once roam the Earth by
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looking closely at rocks we learned that
00:01:42
our sun is a star just like all the
00:01:45
other stars in the sky at night by
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watching them rise and set every
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day we watched shadows and figured out
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that our world is a spinning ball we
00:01:56
invented clocks there are a lot of
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experiments that you can do at home to
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learn about huge scientific ideas you
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don't need a special lab your lab can be
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anywhere because science is something we
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do all the time everywhere we go and
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then we'll go into spot bowling and
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picking up fair
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Elizabeth I'd like very
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few not only that scientific principles
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hold true everywhere we go that's right
00:02:21
a good science experiment is
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repeatable try this get a big bowl and
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fill it with ice
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[Music]
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water now get a 2 L Pot bottle with its
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cap and fill this with very hot
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water H let the bottle sit for a few
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moments
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[Music]
00:03:06
now dump the hot water
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out and put the cap on fast I mean right
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now look at he split and put the bottle
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in the icy cold
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bowl look the bottle collapsed now why
00:03:23
is that well when you dump the water out
00:03:25
it's not filled with air it's filled
00:03:26
with an invisible gas water vapor and
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when you cool it the water vapor turns
00:03:30
to liquid water Now liquid water takes
00:03:32
up hardly any room at all compared with
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water vapor so the air in the atmosphere
00:03:36
crushes the bottle like a Giant's
00:03:41
fist anyway the atmosphere is Big so the
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effect is Big come with
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me warm air takes up more space it
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expands cool air takes up less space
00:03:56
cool air contracts
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[Music]
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take a look at
00:04:08
this it's our great
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big atmospheric container crushing
00:04:13
experiment of science but now instead of
00:04:15
using a plastic bottle from the kitchen
00:04:16
we use this big metal
00:04:19
drum first we lower it onto the heat
00:04:22
kids this Barrel thing can be dangerous
00:04:23
so stick to the pop bottle okay then we
00:04:26
put in a little water
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[Music]
00:04:37
now we wait while the water boils and
00:04:39
the steam drives all the air from inside
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the metal
00:04:45
drum that ought to do it now we take it
00:04:48
off the
00:04:55
heat and we seal it up with this it's
00:04:57
called a bun and that hole would be the
00:05:03
mhm now all we got to do is cool it
00:05:27
off I crushed it like a giant it's fist
00:05:30
a good experiment is repeatable it's
00:05:37
science that's liquid air boiling at a
00:05:40
temperature of
00:05:42
190° below 0 cenr now I know you're not
00:05:46
used to seeing air as a liquid but uh
00:05:50
temperature and pressure determine the
00:05:52
form and shape of most subst you'll also
00:05:55
see the effects that uh are obtained by
00:05:58
uh using it very
00:06:02
PRS that are notar associated with them
00:06:05
maybe there's an experiment we can do to
00:06:06
find
00:06:08
out you can see air pressure by using a
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clear glass of water like this and a
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piece of paper a postcard or a card like
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this all you have to do is put the card
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over the glass of water like this now
00:06:20
flip
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it the air pressure in the room pushes
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the card up against the rim and holds
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the water in the glass all right now
00:06:28
we're going to try it with something
00:06:30
a little bit bigger fill it with
00:06:38
water now we do the same experiment and
00:06:41
put the card over the top and it should
00:06:43
work right cuz it worked on the smaller
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one and it's the same experiment well
00:06:47
we'll just do
00:06:48
[Music]
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it um
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dad testing will sometimes show that you
00:07:02
have not made the right guess so you
00:07:04
keep on thinking and testing may I be
00:07:07
excused the
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lunal
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14
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investigation what's he doing here he's
00:07:19
showing us that you can do science
00:07:21
anywhere you can yes yes son you can
00:07:24
investigate huge ideas with common
00:07:26
household items and a little Ingenuity
00:07:29
now not only that a good experiment is
00:07:36
repeatable when matter is a gas a lot of
00:07:38
the time you can't see it it's invisible
00:07:40
but here's a way to prove to yourself
00:07:41
and any of our fellow scientists that
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invisible gas is matter we wait it first
00:07:47
take a look at this broomstick balance
00:07:48
of science it's a broomstick with a hole
00:07:50
in it there's a lunch bag tack to each
00:07:52
end now we need to make some invisible
00:07:54
gas this is an old trick but it's a good
00:07:56
one pour some vinegar into a pitcher
00:08:00
then add a little bit of baking
00:08:04
soda that fizzing is carbon dioxide gas
00:08:07
coming off it's the same gas that
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bubbles out of our soft drinks even
00:08:10
though it's invisible you can still pour
00:08:12
it just like you pour water or milk pour
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the invisible gas into one of the bags
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it pours even though you can't see
00:08:22
it the gas is heavier than the air and
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the bag on this end goes down it's
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invisible but it's matter it's in the
00:08:29
phase of matter that we scientists call
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gas and it's total science why all this
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emphasis on observing things all science
00:08:39
begins with observation because
00:08:41
observation is one of the very best ways
00:08:43
to
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learn here's a light trick that doesn't
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need mirrors put a penny in a pie
00:08:50
pan now move back so you don't see the
00:08:53
penny don't move cuz I'm going to pour
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the water
00:08:58
in it's okay if you make a
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mess pretty cool
00:09:03
hey see light's always bouncing off the
00:09:06
penny but when you pour the water in it
00:09:08
makes the light Bend and the bending of
00:09:10
the light makes the penny reappear but
00:09:12
the penny didn't move through all of
00:09:13
this but don't take my word for it try
00:09:16
it son I think it's time we had that
00:09:19
talk about the birds and the bees uh
00:09:22
mom can I have a glass of water yes
00:09:26
Richie H that sounds tasty honey can I
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have one too why of course dear
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[Music]
00:09:46
[Music]
00:10:04
Hey look it's little air pressure
00:10:05
holding up the card under the glass of
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water fast any experiment you can do at
00:10:08
home of science see the water in the
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glass doesn't spill out because the
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pressure of the atmosphere is pushing in
00:10:14
all directions at once so not only is it
00:10:16
pushing down on the glass it's pushing
00:10:18
up on the card and it's strong enough to
00:10:20
hold it
00:10:24
[Music]
00:10:25
there let's think about that this time
00:10:29
I'm going to get some
00:10:31
help
00:10:32
cool okay so now we put the card on top
00:10:35
and flip it
00:10:40
[Music]
00:10:48
[Music]
00:10:56
[Music]
00:11:20
exquisit here's how you can make an egg
00:11:22
tower all you need is an egg and a
00:11:24
couple of bottle caps take an egg and
00:11:25
put it between two bottle caps so that
00:11:27
you have a flat surface then balance a
00:11:30
book on
00:11:34
[Music]
00:11:37
top eggs are strong structures because
00:11:40
the weight is spread out all over the
00:11:41
eggshell this is an egg experiment you
00:11:44
can try at home give gives a brilliant
00:11:46
performance on the tracking an egg
00:11:47
structure with one egg was insect right
00:11:50
with three eggs take your eggs and place
00:11:53
them between two bottle caps arrange
00:11:55
them in a triangle then set something
00:11:58
heavy on top
00:12:00
[Music]
00:12:09
three eggs can hold more than one egg
00:12:11
because the weight of the book and the
00:12:13
Soup cans is spread out over all three
00:12:15
eggs eggs the one of Nature's Most
00:12:18
Beautiful structures and that's no Yol
00:12:24
[Laughter]
00:12:30
eggs are strong structures I'll bet
00:12:32
these eggs could even hold up cinder
00:12:34
blocks no I bet you're right set them
00:12:36
down one at a
00:12:39
[Music]
00:12:54
time eggs are amazing what
00:12:59
[Music]
00:13:09
Richie
00:13:10
Richard see that's the weight of The
00:13:12
Columns of the air that press down upon
00:13:14
the
00:13:16
Earth dad and at
00:13:20
highering less
00:13:22
and Dad it might even take you 10
00:13:26
minutes Richie what is it why do my
00:13:28
clothes always get stuck together when I
00:13:29
dry them it's just not
00:13:33
fair here are two fun things you can do
00:13:36
with your hair and a comb one cut a
00:13:38
square paper tape it in a roll like
00:13:41
this then comb your hair very
00:13:46
fast hold the comb near the
00:13:51
paper wow
00:13:54
needle am I having a bad hair day or
00:13:57
what two comb your hair again now hold
00:14:01
the comb near running
00:14:02
[Music]
00:14:06
water the water bends electrons went
00:14:09
from your hair to the comb all those
00:14:10
extra electrons are what pulled the
00:14:12
paper the comb build up a negative
00:14:14
charge that's what pulled the water
00:14:15
molecules
00:14:19
static well Richie let me show you
00:14:26
something hey let me try
00:14:30
what Richie doesn't realize is that he
00:14:31
and Dad have entered the static
00:14:33
electricity Zone a Zone where water
00:14:35
molecules allow electrons to flow from
00:14:37
one surface to another in this case the
00:14:40
sock was negative it had extra electrons
00:14:42
the shirt was positive it had fewer
00:14:44
electrons the water molecules allowed
00:14:47
the electrons to flow they evened out
00:14:49
the charges
00:14:51
neutralized you know this doesn't just
00:14:53
happen in the static electricity this
00:14:54
happens all the time I mean you can
00:14:55
repeat this experiment yourself hey Bill
00:14:58
it's
00:15:02
science let's try an experiment perhaps
00:15:04
your mother will let you perform this
00:15:06
experiment in her kitchen all you'll
00:15:07
need is a toy balloon and a tea kettle
00:15:09
of boiling
00:15:11
water here's an experiment that shows
00:15:13
how the salty ocean makes things float
00:15:19
better a raw egg won't float in fresh
00:15:21
water but if you pour some salt water in
00:15:23
a glass
00:15:29
it floats it floats it floats that's
00:15:31
because salt water has more stuff in it
00:15:33
so it can hold up the egg science
00:15:36
Rules we put the card over the
00:15:39
[Music]
00:15:45
top and flip it
00:15:49
[Music]
00:16:04
W check it out it
00:16:15
[Music]
00:16:22
worked science is everywhere in the
00:16:25
trees and birds and the air you can
00:16:27
experiment with everything discover is a
00:16:29
lovely thing watch the clouds Flow by
00:16:32
and think of water Raper in the sky the
00:16:34
water that you boil on the sto makes a
00:16:36
cloud and then begins to
00:16:41
r on the
00:16:43
[Music]
00:16:52
sh if you experiment repeatedly and get
00:16:55
the same results continually then you
00:16:56
know that your Discovery has been a
00:16:59
successfully if you experiment
00:17:01
attentively you can make a great
00:17:03
discovery say you want to make a snazzy
00:17:05
boat experiment to see what things will
00:17:07
flow do it yourself
00:17:11
science on the sh science
00:17:15
[Music]
00:17:35
well Partners that's our show thanks for
00:17:37
watching to excuse me I'm going to show
00:17:39
myself some scientific principles with
00:17:40
stuff I find around the house today it's
00:17:42
the angular momentum of flexible systems
00:17:44
see
00:17:47
you it's
00:17:50
repeatable produc in association with
00:17:53
the National Science
00:17:55
Foundation First what you do p them up
00:17:57
on the site bring it across your body
00:18:00
Palm down then you turn your palm over
00:18:03
into back there you know lady you've got
00:18:05
a lot of hair you want to look through
00:18:07
the loop that's what you want to do
00:18:08
you're a little close to me I can't
00:18:09
quite get the loop between you yeah
00:18:11
there and let it happen yes that's
00:18:13
really good man you look at your taret
00:18:15
you throw overand kind of like you throw
00:18:16
a ball yes yes yes all right two three
00:18:21
go that's not bad okay ow
00:18:40
it's a cut okay good
00:18:44
[Music]
