3.1 The weather

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

Chapter 3: Weather and Climate

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Learning objectives 3.1 Weather

• Define the keyword ‘weather’
  
• Explain the four most important parameters when it comes to the weather.
• What does the water cycle impact the weather?

Weather

Weather is the current state of the atmosphere.

Lowest layer of the atmosphere = the troposphere. 

The most weather pehonomena take place in the Troposphere. 

Wich main characteristics (there are 4) of weather could you identify?

The weather in Maastricht on

January 5th 2016.

The weather in Groningen on

January 5th 2016.

Temperature

meteorologists often use an isotherm map

Isotherm = a line in a map that shows equal temperature.

What do we call the process in which water vapour turns into liquid water?

1. Evaporation
2. Precipitation
3. Condensation
4. Transpiration

Wind

The Beaufort scale indicates the strength of the wind. 

Wind is the movement of air through the atmosphere. 

It is caused by atmospheric pressure = pressure of the air in the atmosphere.

In general 2 types of presure

high pressure (H)

low pressure (L)

The air in low pressure areas.....

1. Is rising up (in to the atmosphere)
2. Is comming down from the atmosphere on the surface of the earth
3. Does nothing actually, is just chilling on the same hight/place

How does it happen that air is rising up (in to the atmosphere)?

Law of Buys Ballot

The flow of the wind is always from high pressure areas to low pressure areas. 

Law of Buys Ballot

IN GENERAL, this wind is deflected towards the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

 

(With the wind comming from your back)

WHY (for heaven's sake)

Isobars over the UK: H means high pressure zone, L means low pressure zone. What is the current wind direction over Scotland?

What's the difference between 'weather' and 'climate'?

Essence

Weather is the current state of the atmosphere. This means it easily changes and it can be different when you move from one place to another; but it can also change when you simply sit in the same spot for a while. The four most important variables we look at when we measure the weather are temperature, precipitation, wind and cloud cover.

Homework at3

learning goals 1 - 5 

test June 1st