How would you describe a volcano?
WHAT IS A VOLCANO ? The word volcano is used to describe either a kind of mountain built up of volcanic rock or vent that pours out gas, molten rock and volcanic ash. The vent is the conduit that extends from the Earth’s upper mantle or lithosphere to the surface.
How do you describe a volcanic eruption?
A volcanic eruption occurs when molten rock, ash and steam pour through a vent in the earth’s crust. Volcanoes are described as active (in eruption), dormant (not erupting at the present time), or extinct (having ceased eruption; no longer active).
What is a metaphor for a volcano?
E.g. The volcano is a gigantic upside-down ice cream cone. It roars like a fiery dragon awoken from its sleep. Also use personification, a type of metaphor where you make something non-living sound like a human or living creature, E.g. Lava spews out of the volcano’s stomach.
Which boundary type has the most volcanoes?
divergent plate boundaries
What happens when pressure inside a volcano builds up?
Inside of a volcano, you’ll find a lot of liquid — magma — and gas. Pressure builds up inside the volcano over time, and when the pressure reaches an extremely high level, it ruptures the ground and out comes the lava. Water above ground or from the ocean finds a passage and flows into a volcano.
What triggers a volcanic eruption?
Volcanoes are formed by eruptions of lava and ash when magma rises through cracks or weak-spots in the Earth’s crust. A build up of pressure in the earth is released, by things such as a plate movement which forces molten rock to exploded into the air causing a volcanic eruption.
How long does a volcano take to erupt?
There are many examples of volcanoes which show some sign of renewed danger and then erupt within an hour, though more commonly, within one day. Most eruptions last hours but some continue for weeks and months.
What causes a volcano to be active?
Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber. This lighter magma then rises toward the surface by virtue of its buoyancy.
How do volcanoes die?
Volcanoes go dormant because magma from the Earth’s mantle can no longer reach the volcano. For example, in Hawaii, the line of islands are slowly moving to the northwest. As the islands move away from the supply of magma, volcanoes become dormant, and new volcanoes form over the magma supply . . .
What are the effects of volcano?
Health concerns after a volcanic eruption include infectious disease, respiratory illness, burns, injuries from falls, and vehicle accidents related to the slippery, hazy conditions caused by ash. When warnings are heeded, the chances of adverse health effects from a volcanic eruption are very low.
How do you know if a volcano is active?
If your volcano is making noise or popping off, then its active. If your volcano has erupted in the past but right now is quiet, it is likely dormant. If your volcano hasn’t erupted in over a million years, you have yourself an ex-volcano.
Why are there no volcanoes in Florida?
No one would expect a volcano in Florida. The geology to support one isn’t there. There is no hot spot, no spreading ridge, nor any subduction. Volcanoes in the US are on the western side of the continent.
Why do volcanoes attract tourists?
But they can also have advantages: – Volcanic ash contains many minerals which make the soil very fertile, – the earth’s crust around a volcano is so thin that it easy to win energy from the heat of the earth, – and volcanoes attract tourists.
How far away should you live from a volcano?
5kms
Can anything live in a volcano?
Above a certain temperature, these bonds break – and even the coldest lava on the planet would be far too hot for DNA or RNA to remain intact. So no, you almost certainly won’t find anything alive in molten rock, even extremophiles.