Volcanoes

• Economie
• Praktijkonderwijs
• Leerjaar 4

volcanoes

SESSION OBJECTIVES

• Define volcano and volcanism
• Analyze the causes and effects of volcanoes
• Basic classification of volcanoes.

Volcanicity

My observation

VOLCANICITY

• The intrusion of magma in the earth's crust 
• Extrusion of molten lava on the earth's surface.

Volcano

VOLCANO

A vent or opening on the crust connected by a conduit to an underlying magma chamber from which lava, steam, volcanic gases are ejected.

Causes of volcanic activity

00:31

volcanic activities are mostly found near ____________

1. Ocean bed
2. Mesosphere
3. Plate boundaries
4. Hot spots

Effects of volcanic activity

Types of volcanoes
based on the
frequency of eruption

01:07

One negative effect I remember.

01:43

One positive effect I remember

01:10

One active volcano I remember

01:23

The active volcanic region around pacific ocean is known as the ______________.

01:54

One dormant volcano I remember

02:26

One extinct volcano I remember