Earthquakes and volcanoes 3.5: Volcanoes

• Aardrijkskunde
• Middelbare school
• havo
• Leerjaar 3

3.5 Volcanoes

Goals

After studying this section, you will be able to:

- Describe what happens during a volcanic eruption

- Explain what the effects of volcanic eruptions are

Explosive

Effusive

Eruption type:

Type of volcano:

Magma type:

Slope type:

Locations:

Shield volcano

Composite volcano

Thin, liquid

Thick, liquid

Gently sloping sides

Steap slopes

Mid-oceanic ridges

Divergent plate boundaries

Subduction areas

Convergent plate boundaries

Do you remember?

What is the difference between oceanic crust and continental crust?

Divergent

Convergent

Earthquakes

Subduction

Volcano

Transform

What is the effect of two continental plates moving divergently?

1. Horst and graben
2. Mid-oceanic ridge

What is the effect of two continents colliding?

1. Fold mountains
2. Volcanoes
3. Subduction
4. Trench

Where in the world do earthquakes mostly happen?

Earthquake

Wave rises due to shallow coast

Wave pushed up by earthquake

Retreat from water on the beach followed by a big wave that crashes back on land

Fold mountains

Earthquakes

Fold mountains

Volcanoes

Earthquakes

Trench

Subduction

Island arcs

Volcanoes

Earthquakes

Trench

Subduction

Volcanoes

Earthquakes

Horst and graben

Fould blocks

Mid oceanic ridge

Volcanoes

Earthquakes

Earthquakes

Earthquakes

Earthquakes

Oceanic

Oceanic

Oceanic

Plate tectonics and its effects