Basketball Nina and the Neurons


Basketball

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# If you got a question and you don't know where to go

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# Ask Nina for some help cos she's got a sideshow

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# She makes sense of our senses while helping all her fans

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# By doing her experiments with potions and with bangs

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# Touch your tongue

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# Fingers

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# Eyes, ears

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# Nose

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Luke helps us with our eyes and Felix with our touch

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# Olly sniffs out smells and scents and Belle she hears so much

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# Bud is Olly's brother, he helps us with our taste

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# They're Nina's little Neurons and they're coming to your place

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# Touch your tongue, fingers

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# Eyes, ears, nose

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# Nina and the Neurons find out what you need to know

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# Nina and the Neurons find out what you need to know

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# Oh, yeah! #

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Four, five, six, seven, eight, nine, ten.

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Hello there. I am seeing how many times

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I can bounce this ball. Here we go.

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One, two, three, four...

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BEEP

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I hear a beep, I see a flash. I wonder what they're going to ask.

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-BOTH: Hi, Nina!

-Hi.

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We've got a question for you.

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Why is a ball so bouncy?

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That's a great question.

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Why are balls so bouncy?

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Bouncing balls is great fun. But what makes them bounce?

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Why not come down to my lab and we'll investigate?

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BOTH: See you soon. Bye!

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Bye.

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Well, I'll need some help to answer this one.

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And I know just who to ask. OK, Neurons, time to get to work!

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ALL: Neurons at the ready, Nina.

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OK. Today's question is, why are balls so bouncy?

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Which Neuron will be most useful in helping us find the answer?

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ALL: Me!

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Will it be fabulous Felix?

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I can help so very much if you need the sense of touch.

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Will it be beautiful Belle?

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I send messages from brain to ear.

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If there's a sound I'll help you hear.

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Will it be lovely Luke?

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For looking or seeing, day or night,

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I'll help you with your sense of sight.

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Will it be awesome Olly?

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If it's pongy or whiffy, but you can't tell,

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my messages help your sense of smell.

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Or will be baby Bud?

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Sour, salty, bitter or sweet,

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I'm your taste buddy whenever you eat.

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It's Luke!

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CHEERING

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ALL: Go, Luke, go, Luke, go, Luke, go, Luke, go, Luke.

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Go, Luke!

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Cool, Nina! I'll be looking out to help ya!

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Today's question is, why are balls so bouncy?

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As we can see a ball bounce, Luke, our sight Neuron,

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will help us.

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But stand by, Neurons, I have a feeling I may need help

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from all of you. I must get the lab ready

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before the experimenters arrive!

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Connor likes playing in the garden.

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Sarah-Louise likes dancing.

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Balls is fun.

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We like bouncing balls very high.

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But they both want to know, why are balls so bouncy?

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So, today, for one day only, Sarah-Louise and Connor

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become The Experimenters!

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Hi, guys!

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BOTH: Hi, Nina!

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Welcome to my lab and thank you for your great question,

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why are balls so bouncy?

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To find out the answer, let's start by using our senses.

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ALL: Whoop-whoo! A senses experiment.

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We're ready, Nina!

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We have some balls here.

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Let's give then a bounce and see what happens!

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Let's bounce!

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Yay!

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Oh, I love that bouncy noise!

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These balls are definitely bouncy.

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But they bounce so fast

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it's hard for us to see what happens.

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Let's look at a ball bouncing slowly.

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Look over here.

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A special camera has taken these pictures

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and then slowed them down so we can see what is going on.

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Wow! When you slow things down,

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you can see everything much better!

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Can you see what happens to the bottom of the ball

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-when it bumps onto the floor?

-It goes flat.

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Yes, the ball gets squashed when it bumps onto the floor.

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But what happens next?

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Does the ball stay squashed?

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-No!

-You're right. It only stays squashed for a moment.

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So after it has bumped onto the floor

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and been squashed,

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it goes back into shape -

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and it's this change of shape

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that is a clue to find out how a ball bounces.

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Let's take these balls back.

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We will try to squash these balls like this.

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Oh! It's quite hard.

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How are you getting on?

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It's really, really hard.

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It is! Does it feel like the ball is pushing back against us?

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-Yes!

-That's exactly what's happening.

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When a ball bumps onto the floor, it's squashed at the bottom,

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then goes straight back into its round shape.

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As the ball goes back into shape, it pushes against the floor.

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It's this push that makes a ball bounce.

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So, when a ball bumps onto the ground,

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it gets squashed at the bottom.

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But the ball goes straight back into shape!

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Remember, Nina, we should be very careful

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if we bounce balls inside.

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You're right, Felix!

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Why do balls bounce better on the playground than the grass?

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Balls bounce better on the playground.

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Let's do another experiment to find out more.

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I know some expert ball bouncers who can help us.

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Where do you think we're going today?

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Maybe it's a playground.

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Nina said we'll meet people who are experts at bouncing balls.

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Then it has to be a playground!

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Look, we've arrived!

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This looks like a very different sort of playground.

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So we want to find out why balls bounce better in the playground

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than they do on grass.

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We've come to this basketball court to find out why.

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Basketball is a great sport

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and the players have to bounce the ball a lot.

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Yay! Hee-hee!

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Wow! Look at how they bounce the ball!

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That is really cool.

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This basketball court is hard, like a playground,

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and this mat is soft and spongy

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like grass.

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We will do an experiment to find out

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how balls bounce on each of them.

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You guys will drop the ball

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from the line onto the floor

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and we will measure how high they bounce.

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First, let's find out what happens

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when we drop a ball onto the hard floor.

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Connor, go for it.

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And...drop.

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It dropped about there.

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Let me just put a sticker on.

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There we go.

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And drop it.

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I think it bounced about there.

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Good dropping.

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I think it bounced up to about there.

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I think it came to about there.

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And...drop it!

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Oh, my goodness!

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It just came to there.

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Drop!

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Oh!

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Drop it!

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I'm sure it went to there that time.

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Drop it!

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Hee-hee-hee!

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It came to there.

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Super work.

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Well done, guys!

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Did the balls bounce higher on the hard floor

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or the soft floor?

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The hard floor.

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That's right. The balls bounced much higher

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when they were dropped onto the hard floor than the soft floor.

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The hard floor really squashes the ball.

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When it goes back into shape,

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it pushes against the hard floor and bounces really high.

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The soft floor doesn't squash the ball as much,

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so it can't bounce as much.

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The harder we squash a ball, the more it bounces.

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Let's see if the type of floor

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makes a difference for playing basketball.

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Our players will play some basketball

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on the soft mats for us. Let's go.

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-Hi, guys.

-ALL: Hi.

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Can you start playing basketball on these soft mats, please?

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Oh!

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-Oh, no, what is happening?

-The ball is not bouncing very well.

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You are right. This definitely proves

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you need a hard floor to play basketball on.

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That's because balls bounce higher on a hard floor, like a playground,

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than a soft floor, like grass.

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Some balls do not bounce as much as others.

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Do you think this ball will bounce?

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BOTH: No!

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Well, let's see.

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Ah, no.

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SHE LAUGHS

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Why does it not bounce?

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That is a very good question.

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Time for another experiment.

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There are lots of types of ball, made of lots

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of different things,

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but we will look at balls with air in them.

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Let's give these balls a bounce to make sure they're bouncy.

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Go for it! Down and catch.

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Good!

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Are they bouncy?

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Yes!

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We can't see the air inside them,

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but we can feel it. I'll show you.

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Put that one here.

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Thank you.

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Just open this bit up here.

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Can you hold your hands out for me, please?

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Can you feel the air from inside the ball?

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It feels like a balloon.

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I love that sound!

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SHE BLOWS

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That's tickling my cheek!

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Lots of balls have the inside them to help make them bouncy.

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The basketballs were filled with air, too, like these clear balls.

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What do you think will happen now we've let some air out of this ball?

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Will it still bounce?

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BOTH: No.

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Let's try.

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-Did it bounce?

-BOTH: No.

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You're right.

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When the ball was full of air, it bounced really well.

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Now it has less air in it, it hardly bounces at all.

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Let's find out why.

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We can't see air,

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so I have filled these balls

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with little white beads and we will pretend

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the beads are air.

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This ball is full of our pretend air.

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This ball is only half-full.

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We know that the harder it is to squash a ball,

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the more it bounces.

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Let's give these a squash and see what happens.

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Try and give them a squash.

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That's it. Have a good feel and a good push.

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Oh!

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Hm. Which ball was harder to squash?

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The full ball.

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Yes, if you squash a full ball,

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it won't stay squashed

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because the air inside will push it back out

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and make the ball round again.

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That is why it is bouncy.

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But when you squash a half-full ball,

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it stays squashed because it doesn't have enough air inside it

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to push it back into shape so it can't bounce.

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# Nina and the Neurons! #

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Your question was,

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why are balls so bouncy? I think we have answered it.

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When a ball bumps to the ground,

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it gets squashed at the bottom.

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It pushes hard against the floor

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and goes back into shape, and that is what makes it bounce.

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Balls bounce much better on hard floors than soft floors.

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Lots of balls have air inside them

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and it is the air that pushes the ball back into shape,

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helping it to bounce

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and make that lovely bouncing sound!

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I hope that has answered your question.

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BOTH: Thanks, Nina, bye!

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Bye!

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If you want to know more about the science that is all around us,

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go to the Nina section on the CBeebies website. Have fun!

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ALL: On your marks, get set.

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Go!

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# If you're itching for some exercise from your head down to your toes

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-# Toes!

-Why not try out something new

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-# And give it a real go?

-Go!

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-# Whenever you are restless and feeling kind of bored

-Bored

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# Grab your friends and go outside

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# And try a brand-new sport

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Spinning, throwing, running, jumping

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# Lots of fun to do

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# Cycling, diving, sliding, rolling

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# It's really up to you

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# If you're wondering how a swimmer swims

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# Or a bike can go so fast

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# Give it a bash and make it last

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# It's time to go get sporty

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# Ooh!

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo

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# Get sporty

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# Doo-be-doop-doop-doo-be-doo. #

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And remember, whether it is inside, outside or on a bike,

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or in a pool, we can all try something new and get sporty.

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See you again soon. Bye!

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-ALL: Bye!

-Get sporty!

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