3.1 airflow and currents

• Geography
• Middelbare school
• havo, vwo
• Leerjaar 3

Welcome

Learning goals

Reading

Learning goals

– You know how high-pressure areas and low-pressure areas occur.

– You know how air flows move energy (heat) around the Earth.

– You know how oceans move energy (heat) around the Earth.

Self Study

Read	3.1 together
Make	3.1
How	Alone - pairs
Time	10 - 15
Done?	Learning goals
Homework	3.1 !!!!!!!
atlas	6
skip	5
Discussing	8,9

Tijdens deze fase van de les controleer je of leerlingen jouw instructie hebben begrepen d.m.v. een begeleide oefening.

Welcome

Learning goals

Explanation

Self study.

Checking assignments

Learning goals

– You know how high-pressure areas and low-pressure areas occur.

– You know how air flows move energy (heat) around the Earth.

– You know how oceans move energy (heat) around the Earth.

Low pressure

• Air expands when it’s hot, this reduces its density. Warm air rises.
  
• Higher in the atmosphere it hits the ceiling and moves sideways
  
• Air cools down and causes precipitation 
  

High pressure

When the temperature drops the process is reversed:

• Air contracts, density increases and the air descents.
  
• This air flows on the earths surface to a low pressure area
  

Wind

Wind occurs due to difference in air pressure.

Self Study

Read	3.1
Make	3.1
How	Pairs
Time	15
Done?	Learning goals
Homework	Learning goals
atlas
skip	5
Discus

Tijdens deze fase van de les controleer je of leerlingen jouw instructie hebben begrepen d.m.v. een begeleide oefening.