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3.3 Earthquakes
3.3 Earthquakes
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Slide 1:
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Aardrijkskunde
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
22 slides
, with
interactive quizzes
,
text slides
and
3 videos
.
Lesson duration is:
45 min
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Items in this lesson
3.3 Earthquakes
Slide 1 - Slide
Earthquake
Slide 2 - Mind map
After studying this section
You are able to:
Explain why an earthquake takes place.
Describe the effects of an earthquake.
Slide 3 - Slide
Slide 4 - Video
Shaking Earth
Earthquake
= Shockwaves which are caused by convergent or transform plate movement.
The movement of plates is registered on a
seismograph
.
The size of an earthquake is measured on the
Richter scale
.
Magnitude
= The size of an earthquake.
Slide 5 - Slide
Richter Scale
Slide 6 - Slide
Mercalli Scale
Slide 7 - Slide
Slide 8 - Video
Hypocentre and epicentre
Epicentre:
Central point of the earthquake on the Earth’s surface.
Hypocentre:
Location in the Earth where the stress has been released.
Slide 9 - Slide
Effects of an earthquake
Aftershocks
: Tremors following the main earthquake.
Buildings and infrastructure (roads, cables, etc.) collapse.
Victims (injuries or even deaths).
Landslides
: Soil and rocks wiggle loose and slide down the hill.
Liquefaction
: The soil becomes liquid and cars and buildings sink into it.
Slide 10 - Slide
A
landslide
caused by an earthquake damaged the road.
Slide 11 - Slide
Soil
liquefaction
after an earthquake in New Zealand.
Slide 12 - Slide
Tsunami
Tsunami
= A giant wave caused by an earthquake underneath the ocean.
When the waves reach shallower water:
Their height can increase by several metres.
The shallow water slows the wave.
The waves get closer together.
Slide 13 - Slide
Slide 14 - Video
Tremors in Groningen, caused by production of natural gas. Relatively small tremors, but they do cause damage to houses!
Slide 15 - Slide
In 2011 an earthquake was felt in Leerdam. There is a
fault
in Limburg which can cause earthquakes in our country.
Slide 16 - Slide
What indicates the size of an earthquake?
A
Magnitude
B
Richter scale
C
Epicentre
D
Seismograph
Slide 17 - Quiz
What do we call the central point of an earthquake on the earth's surface?
A
Magnitude
B
Hypocentre
C
Epicentre
D
Seismograph
Slide 18 - Quiz
What do you see in the picture?
Slide 19 - Open question
What happened in the photo?
Slide 20 - Open question
What to remember
Slide 21 - Slide
Go to the planner in Teams for the homework
Slide 22 - Slide
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