How does a volcano erupt explanation text?
Volcanoes erupt when molten rock called magma rises to the surface. As the magma rises, bubbles of gas form inside it. Runny magma erupts through openings or vents in the earth’s crust before flowing onto its surface as lava. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises.
What volcanoes are found in Africa?
Volcanoes of Africa & Arabia
- Cameroon (6 volcanoes): Cameroon | Kumba Volcanic Field | Manengouba | Ngaoundere Plateau | Oku Volcanic Field | Tombel Graben.
- Chad (6 volcanoes): Emi Koussi | Tarso Ahon | Tarso Emi Chi | Tarso Tôh | Tarso Toussidé | Tarso Voon.
How do you explain volcanoes to kids?
A volcano is a landform (usually a mountain) where molten rock erupts through the surface of the planet. In simple terms a volcano is a mountain that opens downward to a pool of molten rock (magma) below the surface of the earth. It is a hole in the Earth from which molten rock and gas erupt.
How many volcanoes are in Africa?
There are about 1 500 active volcanoes land which erupted sixty enter every year.
What causes volcano?
On land, volcanoes form when one tectonic plate moves under another. Usually a thin, heavy oceanic plate subducts, or moves under, a thicker continental plate. When enough magma builds up in the magma chamber, it forces its way up to the surface and erupts, often causing volcanic eruptions.
How often do volcanoes erupt in Africa?
Nyamuragira is Africa’s and one of the world’s most active volcano. It erupts roughly every two years, producing large fluid lava flows.
What is a volcano Year 3?
What are volcanoes? A volcano is an opening in the Earth’s crust that allows magma, hot ash and gases to escape. When magma reaches the surface of the Earth it is called lava and comes out of the volcano as a volcanic eruption, along with gases and ash.
What is volcano in simple words?
A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth’s crust. As the magma rises, pressure decreases, allowing the gases to form bubbles.
What is the largest volcano in Africa?
| Nyamuragira | |
|---|---|
| Location | Nord-Kivu, Democratic Republic of the Congo |
| Parent range | Virunga Mountains |
| Geology | |
| Mountain type | Shield volcano |
What are the 3 stages of volcanic activity?
There are three stages of a volcano: active, dormant, and extinct.
- Active—A volcano is active if it is erupting, or may erupt soon.
- Dormant—A dormant volcano is one that may have erupted before, but it is no longer erupting.
- Extinct—An extinct volcano is not erupting and will never erupt again.
How are fronted adverbials used to explain volcanoes?
These help to create interesting sentence starters. They can tell us where, when, how and how many. Fronted adverbials- for an explanation text on volcanoes After the first eruption, Later that day, Suddenly, Throughout the night, Earlier in the year, During the explosion, Before……
What was the name of the volcano that erupted in 1883?
In May 1883, a volcano on the Indonesian island of Krakatoa burst into life, sending ash, volcanic gases and pumice into the air. On 27 August, there were four giant explosions, the third of which was one of the loudest ever recorded.
How are volcanoes formed and how are they formed?
Volcano explanation text. A volcano is a large mountain that opens up and shoots out lava in other words it is also known as magma. Volcanoes are formed when the magma from within the earth’s upper mantle works its way up to the surface.
Where is Anak Krakatau volcano in Indonesia located?
Anak Krakatau is an active volcano between the islands of Java and Sumatra in Indonesia. The mountain has been erupting regularly since 1994. This fearsome beast became significantly more eruptive in 2018 regularly erupting from the beginning of the year. In July 2018 the plume coming from it was visible daily but weak and harmless.