C2.1 - Lesson 3: The formation of the Alps

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time-iconLesduur is: 45 min

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From the mountains to the sea



C2.1: The formation of the Alps


zlb@st-maartenscollege.nl

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What is the plan for today?

  • Paragraph 1:
THE FORMATION OF THE ALPS

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Goals of last lesson
  1. You are able to explain the differences between endogenic and exogenic forces.
  2. You can think of 2 examples for both endogenic and exogenic forces (G66).
  3. You can explain why shells and fossils can be found in the Alps.
  4. You can explain in 4 steps how the Alps are formed. 

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Endogenic & exogenic forces
Endogenic forces
Forces from within the Earth, that changes the Earth's crust.

Exogenic forces
Forces from outside the Earth, that changes the Earth's crust.

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Today's goals
  1. You can mention 3 differences between a young and an old mountain range.
  2. You know the 4 different reliefforms, with their height (G77).
  3. You can explain the process of the 3 types of weathering (G81).
  4. You can explain the erosive effect of weathered material in the mountains (G84).

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Check homework!
2, 4 and 5

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2
2 a Exogenic forces change the Earth’s surface from the outside, endogenic forces change it from the inside.
 b earthquake: ... force
  weather: ... force
  weathering: ... force
  volcanic eruption: ... force
  erosion: ... force

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Weathering (G81 + finish C2)
Open your notebook and work out the 3 kinds of weathering.

- What is weathering (in general)?
- What is the difference between erosion and weathering?
- What are the 3 kinds of weathering?
       * Work them out separately
       * What are the characteristics?

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Weathering
You can explain the process of the 3 types of weathering (G81).
"The disintegration of rock as a result of weather and vegetation."

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You know the 4 different reliefforms, with their height (G77).

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Relief
0 - 200m - Lowland
200 - 500m - Hills
500 - 1500m - Low mountain range
1500 and above - High mountain range

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Open exercise 3
in your workbook

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5
100 million years ago: thick layers of dead animals and plants form in tropical sea.
80 million years ago: The African plate starts to move and pushes sedimentary rock out of the tropical sea to the north.
30 million years ago: The African plate collides with the Eurasian plate: formation of the Alps.

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Plate movements

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take note!
Three different movements:

Transform
Divergent
Convergent

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Plate movements

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Open G80

You can mention 3 differences between a young and an old mountain range.

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Answer
Young mountain ranges are high with (1) steep slopes, (2) sharp peaks and (3) deep valleys.
Old mountain ranges have (1) gentle slopes and are (2) round at the top. (3) They are also much lower.

Young mountain ranges are still growing.

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Young or old?

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Young or old?

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Let's go!
  • Read the text at page 24/25 of your coursebook.
  • Make exercises  8 + 9 of paragraph 1 at page 23 in your workbook.
  • Read GeoGuide numbers 81 & 84.

Rules
while working:
  • You are allowed to work together
  • Raise your finger if you've a question.
  • Always read the exercise well before you ask your question.


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Today's goals
  1. You can mention 4 differences between a young and an old mountain range.
  2. You know the 4 different reliefforms, with their height (G77).
  3. You can explain the process of the 3 types of weathering (G81).
  4. You can explain the erosive effect of weathered material in the mountains (G84).

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Homework for next lesson

6 till 9 of paragraph 1.

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