C3.3 Chile - Lesson 9: Atacama Desert

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 3

CHILE

where the Earth stops

Atacama Desert

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THE NEXT LESSON

What is the plan for today?

REPEAT

• Pressure areas
  

ATACAMA DESERT

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).
   

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.
   

How about Chile?

Dry north and wet south?

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.
   

RELIEF & PRECIPITATION

CHILE

• 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.

OPEN G49

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

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

OCEAN CURRENTS

Warm current -> warmer air

Cold current -> colder air

Use the map above. 

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

Together:

Open C3.3 in your workbook and make exercise 4.

Use: G45, G46 and G49

Temperature factor:

6. Location of 

    mountain

    ranges

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

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.
   

Let's go!

• Make 1, 4 and 7 of C3.3 in your workbook

Rules while working:

• You are allowed to work together

Finished?  

• Work on the list of knowledge- and skills

Homework for next lesson

Finish the pressure areas assignment

OCEAN CURRENTS

Warm current -> more evaporation

Cold current -> less evaporation