VOLCANOES

Volcano is a

mountain but in

his hole there

is a lava that

comes from

under the

ground.

When a volcano is active,

materials come out of it.

The materials include lava,

steam and broken rock

pieces.

HOW IS MADE

A VOLCANO?

TIPES OF VULCANOES

C

O

N

E

V

O

L

C

A

N

O

When the

magma is rich

of silica, the

lava is firmer

and sometimes

it becomes

solid, forming a

cap and it could

make a violent

explosion.

S

H

I

E

L

D

V

O

L

C

A

N

O

When the magma is poor of silica, the

lava is liquid and coming out from

crater it can create lava lakes. In this

type of volcano the crater is always

large.

VOLCANO'S

LIFE

A volcano can be:

-ACTIVE-QUIESCENT

-EXTINCT

GEYSER

They are

spectacular

jets of very

hot water

and they

come out of

the ground

for the high

pressure.

Work of: 3ªC