is difficult about trying to represent the globe on a map? –t–taking a 3-d object and trying to...

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What… • Is difficult about trying to represent the globe on a map? – Taking a 3-D object and trying to make it a 2-D object will always result in distortions of: • Area • Shape • Distance

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Page 1: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

What…

• Is difficult about trying to represent the globe on a map? – Taking a 3-D object and trying to make it a 2-D

object will always result in distortions of:• Area• Shape• Distance

Page 2: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

A map maker’s challenge:

How to flatten the Earth?

Page 3: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

Techniques of map projection

Page 4: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

Making a flat map of the Earth…

Is like peeling an orange…

Page 5: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

Making a flat map of the Earth…

• To demonstrate the difficulty of making a flat map of a round surface, make a map out of an orange peel…

• Using a knife, try to peel the orange so that you take the skin off in one piece!

Is like peeling an

orange…

Page 6: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

Not so easy, huh?

Page 7: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

Although, maps can be made at random

Page 8: Is difficult about trying to represent the globe on a map? –T–Taking a 3-D object and trying to make it a 2-D object will always result in distortions

or following a pattern