3Thavo §6.1 Angle of elevation and gradient

§6.1 Angle of elevation and gradient
= Homework
Let's make a good start, doing exercise 1 together.

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§6.1 Angle of elevation and gradient
= Homework
Let's make a good start, doing exercise 1 together.

Slide 1 - Diapositive

Slide 2 - Diapositive

Now what can we learn from all this?

Slide 3 - Diapositive

Homework time, but...

first of all: time for a JOKE!
(It is a rather sick one, so you may ignore it too!)

Slide 4 - Diapositive

When you have recovered from 

Slide 5 - Diapositive

Time to ...

+ Test and 
+ Train your
+ Intuition !

Slide 6 - Diapositive

This is about exercise 6a:

Slide 7 - Diapositive

However, there is a mistake in it:
'The gradient of this street is 0.5 '
This is not correct. Up to you to improve on it!

Slide 8 - Diapositive

The gradient of Baldwin street is...
A
higher than 0.5
B
between 0.5 and 0.7
C
lower than 0.5
D
between 0.3 and 0.5

Slide 9 - Quiz

The real gradient of Baldwin street is...
0.35  !

Slide 10 - Diapositive

Slide 11 - Diapositive

So, 6a tells you about Baldwin street in New-Zealand as being the steepest road on earth.
However.... watch this!

Slide 12 - Diapositive

Slide 13 - Diapositive

Slide 14 - Diapositive

Slide 15 - Diapositive

Enough about roads, that is....
we move over to:
RAILROADS(!) , exercise 6b !!

Slide 16 - Diapositive

Here is 6b:

Slide 17 - Diapositive

Where on earth is Stoos?

Slide 18 - Carte mentale

6b is about
The world's steepest railway track!
It is in Switserland, Stoos. It is a car-free (carefree too?!) Alpine village. Watch!

Slide 19 - Diapositive

Slide 20 - Vidéo

Homework time.
Finish §6.1,
arriving at the Finish, just like the train in Stoos!

Slide 21 - Diapositive