C3.3 Chile - Lesson 8: Atacama Desert

CHILE
where the Earth stops





Atacama Desert
zlb@st-maartenscollege.nl
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AardrijkskundeMiddelbare schoolvwoLeerjaar 3

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CHILE
where the Earth stops





Atacama Desert
zlb@st-maartenscollege.nl

Slide 1 - Diapositive

What is the plan for today?

REPEAT
  • Pressure areas

ATACAMA DESERT

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LAST WEEK'S GOALS
  1. You can explain in 3 steps why there is precipitation in low pressure areas (GG 55).
  2. You can explain in 3 steps why it’s dry in high pressure areas (GG 55).
  3. With the use of Buys Ballot’s law you can draw the correct wind direction between 2 pressure areas anywhere in the world (GG53 + Notes).
  4. You can give the name and location of the 7 permanent pressure areas in the world (GG 54).
  5. You can give the name and location of the 6 permanent wind systems in the world (GG 54).







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THE BUYS 
BALLOT LAW
  1. Air always flows from high pressure (maximum) to low pressure (minimum) over the earth’s surface.
  2. Wind does not flow in a straight line from H to L, but deflects towards the right on the northern hemisphere and the left on the southern hemisphere.




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How about Chile?

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TODAY'S GOALS
  1. You can name 3 reasons that cause drought in the Atacama desert.
  2. You can explain how mountain ranges influence precipitation by using the words windward side and leeward side (GG 49).
  3. You can explain how ocean currents influence precipitation.














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RELIEF & PRECIPITATION

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CHILE
  • Use the extra assigment about pressure areas -> question 4.
  • Explain why the north of Chile is very dry, while the south is very wet. Use the terms prevailing wind, windward side and leeward side


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OPEN G49
You can explain how mountain ranges influence precipitation by using the words windward side and leeward side (G49).

Slide 14 - Diapositive

You can explain how mountain ranges influence precipitation by using the words windward side and leeward side (GG 49).

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OCEAN CURRENTS

Slide 16 - Diapositive

Warm current -> warmer air
Cold current -> colder air

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Use the map above. 
 Explain why the west coast of South America is a lot drier than the east coast.

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OCEAN CURRENTS
Warm current -> more evaporation
Cold current -> less evaporation

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Temperature factor:

6. Location of 
    mountain
    ranges
Mountain ranges can block prevailing winds, so they can be a dividing line between 2 climates.

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ANSWER THESE GOALS
IN YOUR NOTEBOOK


  1. You can name 3 reasons that cause drought in the Atacama desert.
  2. You can explain how mountain ranges influence precipitation by using the words windward side and leeward side (GG 49).
  3. You can explain how ocean currents influence precipitation.














Slide 21 - Diapositive

Let's go!

  • Make 6 + 7 of C3.3 in your workbook

Rules while working:
  • You work alone and in silence

This is also the homework for the next lesson

Slide 22 - Diapositive

Homework for next lesson

Finish the pressure areas assignment

Slide 23 - Diapositive