I = Ilmar
D = Dawn
I: What I thought was that we could do a large picture of a coke can and label it and then talk about the different parts. Look, I've done a rough picture here.
D: OK, so where shall we start?
I: Well, the lid is complicated. Let's start with the body first. I'll do a line from the centre of the can... like this... and label it "body ". What does it say?
D: It's made of aluminium, of course, and it's thicker at the bottom. Q26
I: Right, so that it can take all that pressure.
D: And then I think you should draw another line from the body for the label.
I: Right "label". The aluminium is ironed out until it's so thin that it produces Q27 what does it say?
D:"A reflective surface suitable for decoration."
I: That's right apparently it helps advertisers, too.
D: Yes, because it's so attractively decorated.
I: Good... and then there's the base.
D: Yes, it says the bottom of the can is shaped like a dome so that it can resist Q28 the internal pressure.
I: That's interesting. I didn't know that.
D: Nor did I. OK, so going up to the lid... there are several things we can label here. There's the rim around the edge which seals the can.
I: Got that. And there's a funny word for the seal isn't there?
D: Yes, it's a flange Q29
I: What does it say about it?
D: Well, the can's filled with coke or whatever and after that the top of the can is trimmed and then bent over to secure the lid.
I: That's right, it looks like a seam. We could even do a blow-up of it like this F-L-A-N-G-E...
D: Yes, that would be clearer. I think we should label the lid itself and say that it constitutes twenty five percent of the total weight. Q30
I: Twenty-five percent... so it's stronger than the body of the can.
D: So to save money, manufacturers make it smaller than the rest of the can!
I: Didn't know that either... so how do we open a can of coke?
D: Mmm... first of all there's the tab which we pull up to open the can and that's held in place by a rivet.
I: Mmm... I think that's too small for us to include.
D: I agree, but we can talk about it in the presentation. We can show the opening though Q31
I: That's the bit of the can that drops down into the drink when we pull the tab.
D: Yeah, hopefully. Sometimes the tab just breaks off.
I: I know.
D: Anyway the opening is scored so that it pushes in easily but doesn't detach itself.
I: OK, we can show that by drawing a shadow of it inside the can, like this I'll label it scored opening. Great... well, I think we've got the basis of a really interesting presentation. Let's go and photocopy the article.
D: Fine. I'll take it home and study it some more.