C3.1 Chile - Lesson 4: Chile quakes and shakes

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 3

CHILE

where the Earth stops

C3.1: Chile quakes and shakes

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What is the plan for today?

• Finish C3.1: Chile quakes and shakes
  
• NEXT LESSON: THE ROCK CYCLE

GOALS OF LAST LESSON

1. You can name the 3 types of movements tectonic plates can make.
2. You can explain the words epicentre, hypocentre and seismic gap in your own words.
3. You can describe the difference between continental and oceanic plates.
4. You can explain how trenches are formed in a subduction zone (GG 68).
5. You can explain in 3 steps how volcanoes are formed near a subduction zone.

Differences between a oceanic and a continental plate

Continental plate:

- Thick, light and mainly

   granite.

Oceanic place:

- Thin, heavy and mainly

   basalt.

PLATEMOVEMENTS

You can explain how trenches are formed in a subduction zone (GG 68).

You can explain in 3 steps how volcanoes are formed near a subduction zone.

Formation of volcanoes

in a subductionzone

1. Subduction

2. Deep inside the earth ...

3. The magma ...

HORSTS AND GRABEN

GOALS OF THIS LESSON

1. You can give 2 explanations for the fact that the Andes became so high (GG 78 + coursebook: ‘The Andes’).
   
2. You can describe and explain the difference between young and old mountain ranges (GG 80).
   
3. Based on altitude, you can tell what relief type a landscape is (GG 77).
   
4. You can name and describe the 5 altitude belts (GG 41).
   
5. You can link a cross-section to a map (§1, question 7).
   

We discuss 4 + 5 now

ANDES

Give 2 reasons why the Andes became so high.

(G78 + coursebook: 

‘The Andes’).

ANDES

1. It's the longest subductionzone.
2. The pressure from the rising magma pushed the horizontal layers of rock sideways and upwards. Creates a fold mountain range.

Describe and explain the difference

between old- and young mountain ranges. (G80)

Answer

Young mountain ranges are high with steep slopes (1), sharp peaks (2) and deep valleys (3).

Old mountain ranges have gentle slopes (1) and are round at the top (2). They are also much lower/undeep valleys (3).

But.. Why?

Young or old?

Young or old?

CHECK EXERCISE 6

RE-DO EXERCISE 7

Use G77. 

Write down 1 to 4 and add the correct type of relief.

ANSWER

1 – Low mountain range

2 – High mountain range

3 – Lowland / plain

4 – Low mountain range

Use map 220 and the general key in the Atlas (55th edition). 

Write down 1 to 4 and add the correct topographical name.

This is along the TROPIC OF CAPRICORN!!!

1 – Atacama

2 – (Cordilleras 

        de los) Andes

3 – Gran Chaco

4 – Serra do Mar / 

Serra da Mantiqueira

Let's go!

• Use the GeoGuide
• Make exercise 8 of C3.1

Rules while working:

• You're allowed to work together with your neighbor (WHISPERING).

Finished?

Work out the list of knowledge and skills of C3.1 in your notebook -- 

                                                                                                      or number your notes!!!