Rollercoasters Nina and the Neurons


Rollercoasters

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# If you've 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 science show

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# She makes sense of her 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

-Tongue

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-# Fingers

-Fingers

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-# Eyes Eyes

-Ears Ears

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# Nose 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, he helps us with our eyes and Felix with our touch

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# Ollie sniffs out smells and scents and Belle, she hears so much

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# Bud is Ollie'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

-Tongue

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-# Fingers

-Fingers

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-# Eyes Eyes

-Ears Ears

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-# Nose

-Nose

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

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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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One, two, three!

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Oh, ha-ha! Hello, there.

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I'm just doing an experiment.

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Playing with a ball.

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What goes up -

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oh! - must come down.

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BLEEPING

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I hear a beep, I see a flash,

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I wonder what they're going to ask!

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-ALL:

-Hi, Nina!

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Hi!

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We've got a question for you.

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How do rollercoasters work?

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Oh, that's a great question!

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How do rollercoasters work?

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I love going on rollercoasters,

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all those ups and downs.

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Why don't you come down to my workshop and we'll investigate?

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-ALL:

-See you soon, Nina! Bye!

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Bye!

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Well, I'm going to need some help to answer this one,

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and I know just who to ask.

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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, "How do rollercoasters work?"

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Now, which Neuron do you think'll be most useful in helping us

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find the answer?

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It's Felix!

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CHEERING

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-ALL:

-Go, Felix! Go, Felix! Go, Felix! Go, Felix!

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-ALL:

-Go, Felix! Go, Felix!

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Marvellous! A little touch can mean so much, Nina.

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Today's question is, "How do rollercoasters work?"

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Because we feel lots of different things when we go on

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a rollercoaster, Felix will be helping us today,

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but stand by, Neurons,

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I have a feeling I may need help from all of you.

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Right. I need to get the workshop ready

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before the experimenters arrive.

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Cannie loves ice cream.

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Ben loves fire engines.

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Erin loves reading and writing.

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But they all want to know, "How do rollercoasters work?"

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So today, for one day only,

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Erin, Ben and Cannie become the experimenters!

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Hi, guys!

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-ALL:

-Hi, Nina!

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And hello to Roxanne, who's here to sign for Cannie.

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Hi, Nina.

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Well, welcome to my workshop

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and thank you for your great question,

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"How do rollercoasters work?"

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So first, let's have a look at a really big rollercoaster.

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A rollercoaster is a long track built with hills and dips,

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but unlike a normal car,

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rollercoaster cars don't have an engine.

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How do they move, Nina?

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Let's start with an experiment to find out!

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-ALL:

-Woop-woo! An experiment! We're ready, Nina!

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Now, these toy cars do not have an engine.

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So if I wanted them to move across the table,

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how do you think I could do it?

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Push it.

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Pull it.

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OK, well, let's try that.

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It's moving! Beep-beep! Beep-beep!

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Hey-hey! So pulling the car made it move as well.

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But when I let it go, did it keep moving?

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No.

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No, it didn't. That's right.

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Most rollercoaster cars are only pulled or pushed

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at the start, and then let go.

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But unlike our toy cars, they keep going all the way to the end.

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But how do they do it?

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Well, have a look at our hill over here.

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Cannie, can I ask you to push the little car

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up to the top of the hill and stop there?

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That's it.

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And stop.

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Now, if you let go, what do you think will happen?

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It'll roll down.

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Well, let's see. Let it go.

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Hey-hey!

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You were right!

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So you helped to push the car up the hill,

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but it didn't need any help going down the hill.

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And that's because of something called gravity.

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Gravity is what makes things fall downwards when they are dropped.

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Rollercoaster tracks are built with hills

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so that gravity can pull the cars downhill and make them move.

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How do rollercoasters go so fast, Nina?

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That is a great question.

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Well, real rollercoasters go much faster than our little car here,

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so I think we need to go to a very special park to find out.

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Hm... Where do you think we're going today?

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Nina said we were going to a special park.

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Oh-oh! I hope it's a play park!

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Well, I'd prefer a nice quiet park,

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where everyone can sit and relax.

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Ah...

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I don't think this park will be quiet, Felix!

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Look!

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So here we are at a very special park,

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a theme park!

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I think for our next experiment,

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we need to go on this rollercoaster

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to feel how fast it goes. Are you ready?

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-ALL:

-Yeah!

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Let's go!

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ALL: Woo-hoo!

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Look, the car's being pushed up the hill by the machine.

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Ooh, I'm not sure about this, Nina.

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Ooh-ooh!

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SCREAMING

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Ooh, it's all uppy and downy!

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Fast, woo!

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A bit too fast for me.

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Oh!

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That was brilliant fun, wasn't it?

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-ALL:

-Yeah!

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Rollercoasters are all about having fun,

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so they need to go fast to make them exciting.

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Now, did it feel like the rollercoaster cars

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were going faster down the big hills or the small hills?

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The big hills.

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That's right, so to find out why the big hills are faster,

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let's do another experiment.

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Now, these slopes

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are like the downhill part of a rollercoaster.

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And the tracks are all the same length.

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But, Ben, your slope is steeper than Erin's,

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and Cannie, your slope is steeper than both Erin and Ben's,

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and I'm going to give you a car each, OK?

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Can you pass that along, Cannie?

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Lovely, thank you.

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There we go. We've all got a car each.

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Now I want you to hold your car at the top of the slope.

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And when I say go,

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I want you to let it go,

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and we'll see which car goes the fastest.

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OK.

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One, two, three, go!

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Which car got to the bottom first?

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Mine.

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That's right, so even though the hills are all the same length,

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the car that was on the steepest hill got to the bottom first.

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Now do you know why?

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Did it go faster?

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It did go faster.

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So when a slope is steep,

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like the ones on the rollercoaster,

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it's easier for gravity to pull the cars down to the bottom

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really quickly.

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So the steeper the slope,

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the faster you go,

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and going fast on a rollercoaster is what makes it really exciting!

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Oh, this is exciting! We've found out that rollercoasters

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go really fast!

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And the steeper the slope, the faster you go, whee!

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But why do the hills have to be so high, Nina?

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That's a great question, Felix.

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The high hills do something really important.

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It's time for a final experiment.

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So your question was, "How do rollercoasters work?"

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And so far we've found out they go very fast down a steep hill.

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But why are the hills on a rollercoaster so high?

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Well, let's do an experiment with our

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very own cool rollercoaster to find out!

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Now, can you remember, how did our car get to the top of the first hill?

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It was pushed.

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Yes, remember we saw the machine pushing it, Nina?

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That's right. Rollercoaster cars have to be

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pushed or pulled up the first hill, but

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did the machine push us up the other hills?

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No, Nina.

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No, it didn't. The rollercoaster just kept going.

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So let's see if our rollercoaster will keep going.

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OK, Erin, do you want to help the

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little car get to the top of the hill?

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You can give it a push.

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That's good. Up to the top, and when you get to the green line,

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let go.

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No! It's just rolled back down!

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It did! Our car didn't keep going.

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Hm. Let's have a look at the height of the hills on this rollercoaster

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and see if we can work out what went wrong.

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The first hill here, is that higher or lower than the second hill?

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Higher.

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And have a look at our model rollercoaster.

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Is the first hill higher or lower than the second hill?

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Lower.

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It is lower. So what do you think we should do?

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Make it higher.

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That's a great idea,

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and we'll make the second hill lower. Ho-ho!

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OK, woo-hoo! Now, the first hill is the highest,

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so let's try again. Ben, would you like to have a go?

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Let's watch.

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OK, that's it. Really good.

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Excellent. All the way up to the top.

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Wee bit further.

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And let go!

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ALL: Hurray!

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Yay, it worked!

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Putting the highest hill first meant

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the car kept going over the next hill.

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And that's because the car had enough energy to keep going.

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So this is the golden rule of rollercoaster-building.

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The first hill has to be higher than all the ones after it.

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Who would like a go on my super-cool rollercoaster?

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ALL: Me!

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Ha-ha! I'll get the car.

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Go!

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Yay!

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What an amazing rollercoaster.

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So your question was, "How do rollercoasters work?"

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And I think we've answered it.

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We found out that on most rollercoasters

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the cars have to be pushed or pulled up the first hill by a machine.

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Then they roll down the slopes on their own,

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with the help of a force called gravity.

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The cars go really fast because the slopes are steep!

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The steeper the slope, the faster it goes.

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Whee!

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That's why the first hill is the highest.

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That's the golden rule of rollercoasters.

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So I hope that's answered your question.

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-ALL:

-Thanks, Nina. Bye!

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You're welcome. Bye!

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

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

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# Super structures

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# Super structures

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# Super structures, super structures, super structures

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# Some of them are tall

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# Some of them are wide

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# They're bumpy, lumpy, wiggly too Wiggly too

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# Some of them are strong

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# Some of them are small

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# And they're windy, whirly, whooshy too

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# All around

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# Look over here

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# Build it, stack it, pile it up

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# Come on, let's get building

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-#

-Building building!

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# Race it, hold it, make it stick

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# Come on, let's get building

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# Come on, let's get building

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# Some of them are cosy warm

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# Some of them are chilly

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-# Keep us safe and hide us too

-Hide us too

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# Some of them are just for fun

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# Or help us to stay dry

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# They're underground and high up too

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-#

-Look around

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-#

-Over here

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# Built it, stack it, pile it up

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# Come on, let's get building

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-#

-Building building!

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# Race it, hold it, make it stick

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# Come on, let's get building

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# Come on, let's get building! #

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And remember, there are super structures everywhere.

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Whether they're big or small, wide or tall,

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we can all get building.

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See you again soon. Bye!

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-ALL:

-Bye!

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Get building!

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