Chapter 4: Natural disasters in Japan

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Chapter 4: Natural disasters in Japan

Today

- Start new chapter 4: Natural disasters

- Test next week: what do you need to study?

- Work on assignments chapter 4 or use time to study

What is a natural disaster?

Natural disaster

'A natural disaster is a disaster caused by nature which can cause many casualties and widespread damage'

What types of natural disasters do you know?

There are two types of natural disasters. Which two types you think?

Exogenic

Two exogenic forces:

Changes earth's crust caused by weather. 

Endogenic force: Plate tectonics

Note!!!

Endogenic force: forces from the inside: earthquakes, volcano's caused by convection currents.

Exogenic force: force from the outside: caused by weather.

Convection current

Japan in the ring of fire

This lesson

- Recap last lesson

- Continue with section 4.1

- Work on your assignments

- Documentary

Explain what a natural disaster is

Natural disaster

A natural disaster is caused by nature which can cause widespread damage and many casualties.

What situation qualifies as a natural disaster?

1. An earthquake in Japan caused 100,000 euros of damage. There were 800 casualties
2. A fire broke in a shed in Maarsen after it was struck by lightning no injuries are known
3. Four hotels were completely destroyed by an avalanche in Austria. No one was hurt
4. Due to a strong wind, a large clock has fallen from the Dom toren. There is one casualtie.

Natural disasters can be caused by two different things: which two?

Forces that change the earth's crust

Exogenic force= 

From the outside

Endogenic force=
from the inside

What causes plates to move?

1. Convection current
2. Convection stream
3. Exogenic force
4. Subduction

What are three plate movements?

Divergent

Convergent

Transform

Types of plates 

Note:

Oceanic plate:

- Very heavy!

Continental plate:

- Lighter than oceanic plate. 

Subduction

The heavy oceanic plate is
 forced under the continental
plate. 

The oceanic plate melts >
 becomes magma

Magma rises to the surface and creates a volcano. 

Plate boundaries

Note!

Convection current

=  the flow of molten rock under the earths crust.

Convergent plate boundary

Because of this movement mountain chains will eventually develop in the regions next to the convergent boundary.

The Alps are an example of such a mountain chain. 

Divergent plate boundary

Two tectonic plates which move apart.

Oceanic ridge

Underwater mountains formed by a divergent plate boundary.

Transform plate boundary

Where 2 tectonic plates slide alongside each other .

Earthquakes are common

Draw the directions of plate movement

1.Convergent

2.Divergent

3.Transform

Fill in the blanks: Apply the words Prosperous (welvarend), Jerky (schokkerig), Eruption (uitbarsting) ,Arc (Boog), Volcano

Japan is a ...1......country in East Asia. It is part of the ring of fire 
The ring of fire is an....2.....shaped ring around the pacific plate. Along the plate boundaries you can find multiple......3.....

They ......4.....when magma rises in the subductionzone.

Plates collide not always very smooth, normally they have ....5.....movements and earthquakes are created.

 

Task

Paragraph 1 excersises 2,3,5,6,7 and 9

First 10 minutes in silence 

last 10 minutes of this lesson 

Now you are able to:

1. Explain what the ring of fire is

2.Draw the several directions of plate movement.

Languageaim: Explain what the words: prosperous, eruption, (shape of an) arc and jerky mean.

What is the driving force behind plate tectonics?

1. Convection currents
2. Sea
3. Mantle
4. Lava

Rain is an example of an

1. endogenic force
2. exogenic force

An earthquake is an ... force

1. endogenic
2. exogenic

Homework for next week

Section 4.1 assignments 2,3,5,6,7 and 9 -> homework for 25 March

Section 4.2 assignments 1 up to and including 8 -> homework for 3 april