Definition: A volcanic eruption
occurs when magma is released from a volcano
. Volcanic eruptions can be quite calm and effusive, or they can be explosive. Effusive eruptions produce lava flows, while explosive eruptions
How would you describe a volcano in your own words?
A volcano is an opening in a planet or moon's crust through which molten rock, hot gases, and other materials erupt. Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions. Volcanoes are classified as
active, dormant, or extinct
.
How do you describe a volcano for kids?
A volcano is
a mountain that opens downward to a pool of molten rock below the surface of the earth
. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments. … Volcano eruptions have been known to knock down entire forests.
How do you describe a lava volcano?
Lava, magma (molten rock)
emerging as a liquid onto Earth's surface
. The term lava is also used for the solidified rock formed by the cooling of a molten lava flow. The temperatures of molten lava range from about 700 to 1,200 °C (1,300 to 2,200 °F).
What is volcano short answer?
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 are 10 facts about volcano?
- Volcanoes are openings of the Earth's surface. …
- The word volcano comes from the word ‘vulcan'. …
- Volcanoes can be active, dormant or extinct. …
- The liquid inside the volcano is called magma. …
- Lava is the liquid that is expelled from the volcano. …
- Lava is very, very hot!
What happens if you touch lava?
Lava won't kill you if it briefly touches you
. You would get a nasty burn, but unless you fell in and couldn't get out, you wouldn't die. With prolonged contact, the amount of lava “coverage” and the length of time it was in contact with your skin would be important factors in how severe your injuries would be!
Is lava hotter than fire?
While lava can be as hot as 2200 F, some flames can be much hotter, such as 3600 F or more, while a candle flame can be as low as 1800 F.
Lava is hotter than a typical wood
or coal-buring fire, but some flames, such as that of an acetylene torch, is hotter than lava.
What does lava look like?
Lava (magma that has erupted onto the Earth's surface) is visually mesmerizing – as the molten rock flows downhill, lava exposed to the air cools to a
deep black color
, while the molten rock beneath glows bright orange. … When magma flows or erupts onto Earth's surface, it is called lava.
What is the description of volcano?
Volcanoes are
openings, or vents where lava, tephra (small rocks), and steam erupt on to the Earth's surface
. Many mountains form by folding, faulting, uplift, and erosion of the Earth's crust. Volcanic terrain, however, is built by the slow accumulation of erupted lava.
What's a dead volcano called?
A dormant volcano is one that is “sleeping” but could awaken in the future, such as Mount Rainier and Mount Fuji. An extinct volcano is “dead” — it hasn't erupted in the past 10,000 years and is not expected to ever erupt again.
Kohala
on the Big Island of Hawaii could be considered an extinct volcano.
What is volcanic eruption Class 9?
Volcanoes are
ruptures in the crust of
our planet Earth that allow hot gases, molten lava and some rock fragments to erupt by opening and exposing the magma inside.
What is the oldest volcano?
How old is the oldest volcano? The oldest volcano is probably
Etna
and that is about 350,000 years old. Most of the active volcanoes that we know about seem to be less than 100,000 years old. Volcanoes grow because lava or ash accumulates on the volcano, adding layers and height.
What are 10 facts about earthquakes?
- Earthquakes usually happen on the edge of tectonic plates. …
- Earthquakes occur when the plates get stuck but keep trying to move! …
- Before an earthquake foreshocks might occur. …
- After an earthquake aftershocks are likely to happen.
What are 5 interesting about volcanoes?
- There are Three Major Kinds of Volcanoes: …
- Volcanoes Erupt Because of Escaping Magma: …
- Volcanoes can be Active, Dormant or Extinct: …
- Volcanoes can Grow Quickly: …
- There are 20 Volcanoes Erupting Right Now: …
- Volcanoes are Dangerous: …
- Supervolcanoes are Really Dangerous:
Will lava melt bones?
But yes, you're correct.
Anything living that has bones would certainly be destroyed by lava
.
