SCUOLA PRIMARIA LEONARDO DA VINCI ANNO SCOLASTICO 2010-2011 - CLASSE IV C

We introduce ourselves and our project

HELLO EVERYBODY !We are 24 pupils of“Leonardo da Vinci”

Primary School

Our names areDavide, Michele, Giacomo, Elena, Diego, Luca, Silvia C., Rachele, Christina, Federica, Silvia F., Lorenzo, Matteo, Viola, Melania, Filippo, Isabella, Jennifer, Laura, Francesca, Anna, Mattia, Alessio, Greta.We worked on this project for a long time and we hope you all will enjoy it. If you want to discover all the activities of our school just click on

http://www.scuolaleonardodavinci.it

Home hypertext

map slide 3

Volcanoes slide 1

Introduction slide 2

The Earth inside out slide 4

Long ago slide 5

The Pangaea slide 6

Earth’s platesslide 7

Continental

drift slide 8Formation slide 9

How a volcano begins slide 10

Why?slide 11

VulcanSlide 12

A volcanologistsSlide 13

Where are the volcanoes?Slide 14

Volcano theoryslide 15

Sing a songslide 16

MAP

Hypertext

The End slide 17

Lets take a look inside

Although the Earth appears to be made up of solid rock to us ,it’s actually made up of three distinct layers: core (inner and outer),mantle, (inner and outer) , crust .

CRUST is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle.

FOR MANY YEARS

IT WAS BELIVED

THAT THE

LOCATION OF THE

CONTINENTS WAS

FIXED. IT WAS

BELIEVED THAT

CONTINENTS

WERE SIMPLY

AREAS WHERE THE

CRUST WAS TO

HIGH FOR THE

OCEAN TO COVER

THEM ALL.

In 1915 it was

hypothesized that there

was an original

supercontinent which

was named Pangaea, meaning

"All- land, “.It began

breaking up during the

TRIASSIC (late

period) .

The plates are made of rock and drift all over the globe; they move both horizontally and vertically . Over long periods of time, the plates also change in size as their margins are added to, crushed together, or pushed back into the Earth's mantle.

Parts of the Earth's crust slowly drift atop a liquid core.

FORMATION OF VOLCANOES

Volcanoes are formed when plates hit each other. One of the plates goes under the other. Volcanoes can also be formed when the plates go away from each other.

•Deep in the Earth it is very hot. It is so hot that rocks melt. The melted rock is called magma. The magma is lighter than the rocks around it, so it rises. Sometimes it finds a crack or hole in the Earth’s crust and bursts through.

WHYPressure builds deep in the Earth where the magma is. Suddenly the gases escape and violently explode. It is a kind of toothpaste squirting out of a tube when you give it a hard squeeze.

Did you know?

The name "volcano" has its origin from the name of

Vulcan, a god of fire in Roman mythology.

It was belived that his forge was located beneath

Mount Etna. There the god and his

helpers forged weapons for gods and heroes.

E

R

U

P

T

I

O

N

S

Various

kinds

of

Volcano

Mr. Stoppato is a volcanologist. Being a volcanologist is one of the most dangerous scientific professions there is. He frequently visits volcanoes to observe volcanic eruptions, collect rock and lava samples. Volcanologists study volcanoes in order to better predict eruptions.

A

volcanol

ogist

in

our

school

COUNT

THE TOTAL

AMOUNT

OF ACTIVE

vOLCANOES AND

THEN FIND ALL

THE PLACES ON A

MAP

One of the theories about dinosaur extintion says that huge volcanoes erupted, covered the land with lava, and filled the air with huge clouds of dust.

The weather changed between unusually hot and cold.

Plants died over long periods of time.

The plant-eaters died, followed by meat-eaters.

By the time eruptions stopped, many plants and animals includinng dinosaurs, were gone.

What's it like when volcanoes blow?This is something you ought to know.Pressure builds without interruptionand then explodes in a volcanic eruption.

When volcanoes erupt, here’s what they do:the pressure makes ash and lava spew.

Boulders can get thrown through the air,Move back! —don’t stand and stare!

It’s letting off pressure, it’s not going to wait.It’s going to get to that balanced state

where forces are equal: equilibrium.Then the pressure starts building up again.

What's it like when volcanoes blow?This is something you ought to know.Pressure builds without interruptionand then explodes in a volcanic eruption.

Remember this from your science classes?A volcano’s forces are magma and gases.The underground pressure gets too high

and the volcano blows up in the sky.What's it like when volcanoes blow?

This is something you ought to know.Pressure builds without interruption

and then explodes in a volcanic eruption.

Anno scolastico 2010 - 2011Lavoro svolto dalla classe IV C

guidata dall’insegnante Anna Tanimi

http://www.scuolaleonardodavinci.it/