Tip:
Highlight text to annotate it
X
Is there anybody who hasn't done anything so far today
who would like to try and operate the dynamo?
Craig, you were the first hand so you come up here.
And Harry said, I don't know if people heard...
Harry said, "Is it where the light bulb comes on?"
So, Craig, how do you think you might get the light bulb on there?
Because the more power you put in,
it turns into electricity and goes into the light bulb.
Let's see if you're right. There's only one way to see.
You might want to... give it a spin.
Fantastic. Brilliant.
So was he right? Did the light bulb come on?
- Yeah. - Here's my challenge.
I want someone to volunteer first, then I'll say what the challenge is.
So, Jack, can you make it brighter than Craig did?
Right, at your best point there it was probably a little bit brighter.
So what does he have to do to make the light bulb brighter?
What does he have to do?
- Turn it the other way. - Did he turn it a different way?
What do you think, Alex?
I think the faster you push it, rotate it, the brighter it goes.
OK.
Next question, the hardest question so far today.
I'm going to give you ten seconds' thinking time. Don't answer, think.
Think about what we did earlier this year, about energy.
What does he have to do here in terms of energy
to get the light on here?
So, ten seconds' thinking time.
I won't take any answers. It's the hardest question so far.
I want to see if anyone comes up with a perfect answer for me.
Right, who thinks they can do a perfect answer for me?
Deniz, go for it.
Is it the more energy you put in, the brighter the bulb?
That's good. What's the type of energy you're going to put in?
I'll stay with Deniz. Can you remember what it's called?
Remember, he's doing this.
No, I've forgotten.
Who wants to help Deniz out? Who can remember?
- Go on, Jamie. - Kinetic.
Yep. Fantastic. Kinetic energy.
So, have a look at your key words, go and sit back down
and see how many of those key words you can fill in in the next minute.