1.1 The Earth's crust is moving

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• Leerjaar 1

1.1 The Earth's crust is moving

Page 8 and 9 of the textbook.

Instruction

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Learning objectives

The Earth. What does it look like?

The Earth

What do you know about plate tectonics?

One piece of Earth's crust please

convection currents

Plate tectonics

Convergent

Convergent

Divergent

Transform

Plate tectonics

Learning objective: You understand the theory of plate tectonics.

The movement of Earth's crust plates is called plate tectonics.

What do you come across in areas where plates move towards or away from each other?

• volcanism
• earthquakes
• mountain ranges

Earthquakes, volcanoes, tsunamis

0

Pangaea

Learning objective: You know that supercontinent Pangaeae fell apart long ago.

270 million years ago all the continents formed one supercontinent: Pangaea.

• huge ocean
• inland Pangaea dry
• rock stream pushed Earth’s crust upwards
• supercontinent broke apart

Pangaea

What are the consequences of the
the breaking apart of a continent?   

• smaller continents are formed
• greater influence of the sea
• number of plant and animal species increases

Let's practice

Page 8 of the workbook (or 1.1 online): 1, 2 and 4.

Finished early? Read 'The Alps as an example'.

Formation of mountains: The Alps

Learning objective: You understand how plate tectonics formed the Alps.

The Alps

50 million years ago Italy was attached to Africa. An ocean lay between Italy and Europe.
 The Alps did not yet exist.

Earth’s crust of Africa moves to the north wherby:

• sea becomes narrower
• seabed gets jammed
• rock layers are pushed up
• The Alps are formed

How do you call the outer layer of the Earth?

1. Outer Earth
2. Continent
3. Earth's crust
4. Outer mantle

How do you call the movement of the tough rock within the Earth's mantle?

1. Currents
2. Magma currents
3. Plate tectonics
4. Convection currents

Next week

Homework:

Paragraph 1.1: 1, 2 and 4

Next week: 1.2 Earthquakes