Lesson 3: Atmospheric circulation

• Aardrijkskunde
• Middelbare school
• havo
• Leerjaar 5

Ready to start

• Phone in your bag
  
• Notebook and pen on your desk
• Laptop in your bag 

1. Startklaar

Bij de start van iedere les verwelkomt de docent de leerlingen bij de ingang van de deur, noemt leerlingen bij naam, maakt oogcontact en besteedt aandacht aan hun welbevinden. De docent geeft het goede voorbeeld en spreekt hoge verwachtingen uit voor het verloop van de les door succescriteria op gewenst gedrag, schooltaal en effectief leren te benoemen. De leerlingen zijn startklaar: ingelogd in LessonUp, telefoons opgeborgen in het Zakkie, en JdW-map op tafel.

5.1 Dynamic Earth: Risks from Below and Above

Learner Profile: Knowledgeable

ATL: Structure information & Make connections between sources

Related concepts: Processes

Key concept: time, place and space

Technology and innovation shape how societies respond to Earth’s processes across time, place, and space.

Global context: Scientific and technical innovation

Individuals & Societies

Today's program

• Planner + learning objectives
• Review previous lesson
• Notes + Drawing activity
• Check Learning objectives

Period 1

Week 1	Week 2	Week 3	Week 4	Week 5	Week 6
			FA1

Week 7	Week 8	Week 9	Week 10	Week 11	Week 12
		FA2	Recap	Exams	Exams

Review previous lesson

Are these statements true or false?

Take a piece of scrappaper.
Write number 1 - 7 underneath each other.

https://www.nu.nl/klimaat/6303415/al-een-jaar-recordtemperaturen-in-oceanen-tekenen-dat-opwarming-versnelt.html?referrer=https%3A%2F%2Fwww.google.com%2F

Review previous lesson: True or false?

1. Earth’s system does not include living things
2. The troposphere is the layer closest to Earth and contains almost all weather
3. Satellites are used to observe weather patterns, greenhouse gases, and ozone levels.
4. The Sun’s rays hit the equator more directly than the poles. 
5. All parts of the Earth receive the same amount of solar energy throughout the year. 
6. Tropical climates are found near the equator and are warm all year round.
7. Deserts are only found in Africa.

https://www.nu.nl/klimaat/6303415/al-een-jaar-recordtemperaturen-in-oceanen-tekenen-dat-opwarming-versnelt.html?referrer=https%3A%2F%2Fwww.google.com%2F

Review previous lesson: True or false?

1. Earth’s system does not include living things
2. The troposphere is the layer closest to Earth and contains the weather
3. Satellites are used to observe weather patterns, greenhouse gases, and ozone levels.
4. The Sun’s rays hit the equator more directly than the poles. 
5. All parts of the Earth receive the same amount of solar energy throughout the year. 
6. Tropical climates are found near the equator and are warm all year round.
7. Deserts are only found in Africa.

https://www.nu.nl/klimaat/6303415/al-een-jaar-recordtemperaturen-in-oceanen-tekenen-dat-opwarming-versnelt.html?referrer=https%3A%2F%2Fwww.google.com%2F

Learning objectives

1. What role does atmospheric circulation play in the distribution of solar energy over the Earth?

 

Key terms: Atmospheric circulation, Law of Buys Ballot, Coriolis effect, Monsoons,
Air pressure / atmospheric pressure

Review last week

How is the Sun’s energy distributed across the Earth?

To compensate for the unequal distribution of energy from the sun, the wind and ocean currents redistrubte form lower latitudes to higher lattitudes. 

Hoe hoge hoe kouder.

Hoe verder van de evenaar hoe kouder.

De tijd van de ontdekkingsreizen wordt vaak gezien als begin van grootschalige mondiale interactie

What is wind and how is it created?

Activity

• Research the questions: what is wind and how is it created.
• Be ready to explain to your classmates 

https://www.nu.nl/klimaat/6303415/al-een-jaar-recordtemperaturen-in-oceanen-tekenen-dat-opwarming-versnelt.html?referrer=https%3A%2F%2Fwww.google.com%2F

Notebook en pen ready?

Wind

= Moving air

Arises from differences in air pressure.

The air flows from an area with an excess of air (a high-pressure area) to an area with a shortage of air (a low-pressure area).

Air pressure

= How heavy the air presses on a place on Earth.

A lot of air = high-pressure area

Little air = low-pressure area

Wind always blows from a high-pressure area to a low-pressure area.

Atmospheric circulation

Air moves around the Earth because of differences in pressure.

Warm air rises at the equator, creating low pressure, while cooler air sinks at about 30° north and south, creating high pressure.

This movement sets up large wind systems 
(aka atmospheric circuluation)

Law of Buys Ballot

1. Wind flows from High pressure (H) to Low pressure (L).
   
   
2. Due to the Coriolis effect, the wind is deflected:
   - Northern Hemisphere: to the right, with the wind at your back.
   - Southern Hemisphere: to the left, with the wind at your back.

Activity: Law of Buys Ballot

1. Wind flows from High pressure (H) to Low pressure (L).
   
   
2. Due to the Coriolis effect, the wind is deflected:
   - Northern Hemisphere: to the right, with the wind at your back.
   - Southern Hemisphere: to the left, with the wind at your back.

Can you draw the wind based on rule 1 of Buys Ballot’s law?

Activity: Law of Buys Ballot

1. Wind flows from High pressure (H) to Low pressure (L).
   
   
2. Due to the Coriolis effect, the wind is deflected:
   - Northern Hemisphere: to the right, with the wind at your back.
   - Southern Hemisphere: to the left, with the wind at your back.

Can you draw the wind based on rule 2 of Buys Ballot’s law?

interactiveexplainers.com

This is a model!

The H and L zones are not straight lines in reality, because it depends on incoming solar energy

Intertropical Convergence Zone (ITCZ)

Low-pressure area around the equator.

Shifts with the sun.

Rising, moist air, low pressure = rain!

Types of winds:

Trade winds (Passaat)

Trade winds are stable, steady winds that blow year-round from the subtropical high-pressure zones toward the low-pressure area of the ITCZ.

Monsoon (Moesson)

A wind in tropical regions that changes direction every half year due to the seasonal shift of the ITCZ.

Onshore wind (aanlandige wind) =
wind blowing from the sea towards the land

Offshore wind (aflandige wind) =
wind blowing from the land towards the sea

Check learning objectives

1. What role does atmospheric circulation play in the distribution of solar energy over the Earth?

 

Key terms: Atmospheric circulation, Law of Buys Ballot, Coriolis effect, Monsoons,
Air pressure / atmospheric pressure

End of class activity 

Explain the following images to a classmate: 

Have a good day!