Bob gets busy on a smaller job than usual. Bob and the team learn how the sun can help you tell the time.
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It's great to relax after a hard week's work.
-What time is it, Bob?
-Oh, I've forgotten my watch!
Hm, now let's see.
I think it's about midday.
How do you know?
-I used the sun, Lofty.
-I didn't know the sun could tell you the time.
Mister Sun! What's the time?
The sun can't talk, Dizzy. I can tell it's the middle of the day,
cos it's right above me and my shadow is very short.
Look! My shadow's short, too.
Everyone's is. In the morning, when the sun's low,
it makes your shadow long.
How does that work, Bob?
Imagine this apple is the earth and this orange is the sun.
-The sun is like a great big light.
-It's really bright.
Never look straight at the sun, cos it can hurt your eyes.
Oh, erm... OK.
The earth spins around each day, like this.
When the earth is facing away from the sun, it's night.
When we're facing towards it, it's day.
So if you stood in the same place all day, the earth would turn
and you'd see your shadow move around you.
Rock and roll!
We could build a sun dial. It's what they used in the old days.
The sun is behind me, so I'm facing north. This is twelve noon.
We'll use my watch to mark where the shadow falls every hour.
Now, who can tell me the time?
Oh, me! Me!
I think it's six o'clock, Bob.
That's right, Dizzy.
BOB'S TUMMY RUMBLES
My tummy doesn't need a sun dial.
It knows exactly when it's time for dinner!
Bob gets busy on a smaller job than usual. Bob and the team are relaxing after a hard weeks work when Scoop asks Bob the time. Bob's forgotten his watch but, using the sun, works out that it's about midday. The machines are amazed and Bob explains all about the earth, sun and how sun dials work. The team think it would a great idea to make a sun dial and get to work. The finished sun dial is great, but Bob realises that he doesn't need one to tell him when it's time for dinner!