Speaker 1 (1)
Section three.
Speaker 1 (2)
Two students, Dawn and Ilmar, are discussing a project that they are working on together.
Speaker 1 (3)
First, you have some time to look at questions 22 to 25.
Speaker 1 (4)
Now listen to the first part of the conversation and complete the fact sheet by filling in the numbered spaces 22 to 25.
Speaker 2 (5)
Over the turn presentation.
Speaker 3 (7)
The one on everyday objects?
Speaker 2 (9)
Look at this article.
Speaker 2 (10)
It's really interesting.
Speaker 3 (11)
The aluminium coke can?
Speaker 2 (12)
You know, Coca Cola cans, soft drink cans.
Speaker 2 (13)
Look, let's sit down here.
Speaker 2 (14)
Have you got a minute?
Speaker 3 (16)
I'll just get my bag.
Speaker 3 (18)
So you think we can get a presentation out of this article?
Speaker 2 (19)
I'm sure we can.
Speaker 2 (20)
First of all, we can provide some interesting facts about the aluminium cans that we drink out of every day.
Speaker 2 (22)
Well, here, it says that in The U.
Speaker 2 (23)
S, they produce 300,000,000 aluminium drink cans each day.
Speaker 3 (24)
Wow, 300,000,000.
Speaker 2 (26)
That's an enormous number.
Speaker 2 (27)
It says here, outstrips the production of nails or paper clips.
Speaker 2 (28)
And they say that the manufacturers of these cans exercise as much attention and precision in producing them as aircraft manufacturers do when they make the wing of an aircraft.
Speaker 3 (30)
Let's have a look.
Speaker 2 (31)
They're trying to produce the perfect can, as thin but as strong as possible.
Speaker 3 (32)
This bit's interesting.
Speaker 3 (33)
Today's can weighs about 0.48 ounces, thinner than two pieces of paper from this magazine say.
Speaker 2 (35)
And yet it can take a lot of weight.
Speaker 3 (36)
More than 90 pounds of pressure per square inch, three times the pressure of a car tire.
Speaker 3 (39)
It's a good topic.
Speaker 1 (40)
Now look at the diagram of the aluminium can and at questions 26 to 31.
Speaker 1 (41)
As the conversation continues, label the can by completing the notes in the numbered spaces 26 to 31.
Speaker 2 (42)
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.
Speaker 2 (43)
Look, I've done a rough picture here.
Speaker 3 (45)
So where shall we start?
Speaker 2 (46)
Well, the lid is complicated.
Speaker 2 (47)
Let's start with the body first.
Speaker 2 (48)
I'll do a line from the center of the can like this and label it body.
Speaker 2 (49)
What does it say?
Speaker 3 (50)
It's made of aluminium, of course, and it's thicker at the bottom.
Speaker 2 (52)
So that it can take all that pressure.
Speaker 3 (53)
And then I think you should draw another line from the body for the label.
Speaker 2 (56)
The aluminium is ironed out until it's so thin that it produces what does it say?
Speaker 3 (57)
A reflective surface suitable for decoration.
Speaker 2 (58)
That's right.
Speaker 2 (59)
Apparently, it helps advertisers too.
Speaker 3 (60)
Yes, because it's so attractively decorated.
Speaker 2 (62)
And then there's the base.
Speaker 3 (64)
It says the bottom of the can is shaped like a dome so that it can resist the internal pressure.
Speaker 2 (65)
That's interesting.
Speaker 2 (66)
I didn't know that.
Speaker 3 (69)
So going up to the lid.
Speaker 3 (70)
There are several things we can label here.
Speaker 3 (71)
There's the rim around the edge, which seals the can.
Speaker 2 (73)
And there's a funny word for the seal, isn't there?
Speaker 3 (75)
It's a flange.
Speaker 2 (76)
What does it say about it?
Speaker 3 (77)
Well, the can's filled with coke or whatever.
Speaker 3 (78)
And after that, the top of the can is trimmed and then bent over to secure the lid.
Speaker 2 (79)
That's right.
Speaker 2 (80)
It looks like a seam.
Speaker 2 (81)
We could even do a blow up of it like this.
Speaker 2 (82)
F L A N G E.
Speaker 3 (84)
That would be clearer.
Speaker 3 (85)
I think we should label the lid itself and say that it constitutes 25% of the total weight.
Speaker 2 (87)
So it's stronger than the body of the can.
Speaker 3 (88)
So to save money, manufacturers make it smaller than the rest of the can.
Speaker 2 (89)
Didn't know that either.
Speaker 2 (90)
So how do we open a can of Coke?
Speaker 3 (91)
First of all, there's the tab which we pull up to open the can, and that's held in place by a rivet.
Speaker 2 (92)
I think that's too small for us to include.
Speaker 3 (94)
But we can talk about it in the presentation.
Speaker 3 (95)
We can show the opening though.
Speaker 2 (96)
That's the bit of the can that drops down into the drink when we pull the tap.
Speaker 3 (97)
Yes, hopefully.
Speaker 3 (98)
Sometimes the tap just breaks off.
Speaker 3 (100)
Anyway, the opening is scored so that it pushes in easily but doesn't detach itself.
Speaker 2 (102)
We can show that by drawing a shadow of it inside the can like this.
Speaker 2 (103)
I'll label it scored opening.
Speaker 2 (105)
Well, I think we've got the basis of a really interesting presentation.
Speaker 2 (106)
Let's go photocopy the article.
Speaker 3 (108)
I'll take it home and study it some more.
Speaker 1 (109)
That is the end of Section three.
Speaker 1 (110)
You now have half a minute to check your answers.
Speaker 1 (111)
Now turn to Section four.
