Chapter 7.3 Talas rages over Japan (part 2)

• Aardrijkskunde
• Middelbare school
• havo
• Leerjaar 1

Chapter 7.3

Talas rages over Japan (part 2)

The aims of this paragraphe

Things you should know:

• how hurricanes affect people, the economy and the landscape
  
• the characteristics of a hurricane
  
• the relationship between levels of development and the damage and number of victims caused by hurricanes
  
• how to classify a hurricane according to the Saffir-Simpson scale (figure 12)

G8 Dimensions

Look at an area in different ways:

● The physical dimension is about natural subjects such as climate or soil.

● The economic dimension is about earning money and employment.

● The socio-cultural dimension has to do with languages, religions, living conditions and other characteristics of the inhabitants.

● The demographic dimension is about the changes in population size.

● The political dimension is about who is in charge, for example the influence of a ministry or interest group.

G52 Wind

The air around us consists of billions of small particles (molecules).

The moving mass of air is called wind. When the air moves quickly, the wind force is high. 

You can measure wind speed with a wind meter. 

When the wind speed reaches 12, there is a hurricane. The Beaufort scale is still used in weather forecasts.

G57 and G58 Hurricanes

A hurricane is a heavy tropical storm with a wind force of at least 12 on the Beaufort scale. The storm forms above seawater with temperatures above 26.5°C. 

These high temperatures only 

occur at the end of summer.

Other characteristics

• Hurricanes are between 500 and 1,500 km wide. 
• A hurricane lasts between five and ten days on average.
• Hurricanes occur mainly in the tropics.
• Every tropical storm is given a name.
•  The wind can reach speeds of between 100 and 250 km per hour.
• A hurricane consists of a circular low-pressure area that rotates around an eye

1

Hurricanes form above warm seawater (at least 26.5°C.)

The air above the sea is warm and a lot of seawater has evaporated. 

2

Moist air rises quickly, cools down, and then it starts to rain.

3

As the water vapour condenses, heat is released, which makes the air rise even more quickly. 

4

The low pressure at sea level causes air to be sucked in from all directions. (like a vacuum-cleaner)

September 2020

The wind direction and sea currents are heading in the same direction

npokennis.nl

Is there a relationship between hurricanes and human action? 

Learn chapter 7.3 and do assignment 1-2-3-4 on the geo online.