Volcanoes

• Economie
• Praktijkonderwijs
• Leerjaar 4

SESSION OBJECTIVES

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

Define volcanism

Causes of volcanism

Any 2 negative effects of volcanism

Any 2 positive effects of volcanism

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

Crust

Mantle

Core

Rotation
(direction and speed)

Effects of rotation

Revolution
(definition and
the closest position
to the sun)

Effects of revolution

Latitudes
Definition

Main latitudes
(degree and name)

uses of latitudes
(Heat / thermal / climatic
)zones

Longitudes
Definition

Main longitudes

Uses of longitudes
(Time types - zones)

IDL

Volcanicity

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

01:07

One negative effect I remember.

01:43

One positive effect I remember

Types of volcanoes
based on the
frequency