This document provides information about volcanoes. It defines volcanoes as openings in the Earth's surface that allow magma, ash, and gases to escape during eruptions. It notes they are usually located at tectonic plate boundaries, especially around the Pacific Ring of Fire. The document describes how magma rises through the volcano's vent and turns to lava before erupting. It lists some facts about volcanoes and provides a diagram of a volcano's structure. It also discusses impacts of volcanoes on people and the environment, both positive and negative, as well as strategies for preparing for a volcanic eruption.

1. by

2. Contents
 Volcanoes page
 Contents page
 Facts
 How do volcanoes erupt
 What are volcanoes
 volcano diagram
 Impacts on people and there
environment
 Strategies
 The end

3. facts Volcanoes are openings in the Earth’s surface. When they are
active they can let ash, gas and hot magma escape in
sometimes violent and spectacular eruptions.
 The word volcano originally comes from the name of the
Roman god of fire, Vulcan.
 Volcanoes are usually located where tectonic plates meet. This
is especially true for the Pacific Ring of Fire, an area around the
Pacific Ocean where over 75% of the volcanoes on Earth are
found.
 Hot liquid rock under the Earth’s surface is known as magma, it
is called lava after it comes out of a volcano.
 While we certainly have some big volcanoes here on Earth, the
biggest known volcano in our solar system is actually on Mars.
Its name is Olympus Mons and it measures a whooping 600km
(373 miles) wide and 21km (13 miles) high.

4. First a volcano makes something called magma from melted
rock. The magma goes through a currency. It has to form at
the bottom of the volcano and then start its way up the main
vent. The main vent is a hole that is in the volcano and when
the volcano is ready to erupt the lava is at the top of the main
vent. The magma goes up the main vent slowly while it is
still getting hotter. When the magma is about half way up the
main vent it turns into lava. Lava is a very hot liquid which
burns the remaining rocks from the magma. The lava slowly
continues up the main vent. While going up the lava
continues to get hotter and hotter. Ash and rocks are collected
and the lava is getting hotter and hotter while the lava is
continuing its way up the main vent. When the lava is at the
top of the main vent the volcano erupts. The lava blasts out
of the volcano along with ash, rocks, and a cloud of dust that
is very thick.
How do volcanos erupt?

5. What are volcanos
• Volcanos are just like mountains but a volcano has a main vent
a main vent is a hole where the lava comes out .
• A volcano is a conical hill or mountain formed by material from the mantle being
forced through an opening or vent in the Earth's crust.
•Volcanoes are openings in the Earth’s surface. When they are active they
can let ash, gas and hot magma escape in sometimes violent and
spectacular eruptions
•Volcanoes are usually located where tectonic plates meet. This is especially
true for the Pacific Ring of Fire, an area around the Pacific Ocean where over
75% of the volcanoes on Earth are found.

6. Diagram of a volcano

7. Negative Positive
Impacts on people and the environment
Ash on houses
Lava can cover houses
Result in death
Air crash of planes or delayed
flights
Rich volcanic soils
Volcanic eruptions create economic mineral
deposits
To provide nutrients to surrounding soil
They might survive

8. Strategies
Making sure that they are ready if a volcano hits there city
Put goggles and disposable breathing masks for each family
member in your family
Try Supply a safety kit for everyone in you community
Tell them that a volcano is going to erupt

9. By Zion and Anthony