Quarter 3

Written Work No.1

What is a Volcano?

• A volcano is an opening in the Earth’s crust through which lava,

volcanic ash, and gases escape.

• On Earth, volcanoes are most often found where tectonic plates

are diverging or converging, and most are found underwater.

• Volcanoes are pressure valves that release energy from deep

within the Earth.

• Beautiful and powerful, awe-inspiring and deadly, they are

spectacular reminders of the dynamic forces that shape our
planet.

• Volcano – a fissure or vent through which molten rock material,

or magma, and gases from the interior of the earth erupt on to
it’s surface, and the landform which is produced as a result of
this eruption.
How do Volcanic Eruption Affect Society?

Predicting a
As the world’s
population grows more
Volcanic eruptions
volcano’s eruption
When a volcano
continue to happen
and more people are accurately will lead erupts it
living in potentially
and they can cause to more saved lives
dangerous volcanic great threats to and ensure our
produces many
areas. life and property. safety. threats:
(1) POSITIVE EFFECTS

Income to an area is Lava and ash deposited during Geothermal energy can be
created by tourists an eruption breaks down to harnessed because of the
because the dramatic provide valuable nutrients
for the soil, this creates
high level of heat and
scenery created by
volcanic eruptions very fertile soil which is activity inside the Earth
attracts tourists. good for agriculture. close to a volcano.
 Deadly and
Many lives devastating
can be lahars are made
when ash and mud
lost as a from an eruption
mixes with rain
result of or melting snow
a volcanic making fast
moving mud
eruption. flows.

Lahars and lava Human and

flows can destroy natural
settlements and
clear areas of landscapes
can be
(2) NEGATIVE
woodland and
agriculture with
it’s fast flowing destroyed
and temperature and changed
over 400 degrees.

EFFECTS
forever.
They can destroy cities. A Volcano can cause
many avalanches.

While magma is still in the Earth’s crust it causes

cracks on Earth’s surface showing the magma.

Mud slides are so powerful they can push rocks

over even the strong wall to collapse.
A Volcano can cause many horrible things
like earthquakes.

They can cause mud slides. Mud slides are

very powerful.

Avalanches are sometimes made from when a

Volcano erupts.

Volcanoes can be very dangerous in many

ways.

Somethings volcanoes do are good.

These natural phenomena, no
matter how horrible these can
be, can also be a marvelous
wonder to our mother nature.

Nevertheless, if you weigh the

advantages and disadvantages,
still, it is a life taker.

Just like what had happened

many times in the country.

Nobody can escape the

reoccurrence of this
upredictable phenomenon.