Volcanoes produce a variety of hazards, depending on the chemical composition and gas content of the lava (as well as on other factors)
The most common volcanic gases are water vapour, carbon dioxide, sulphur dioxide, hydrogen, hydrogen sulphide, and carbon monoxide. Some of these gases are irritating or poisonous, orcause breathing problems, and the release of sulphur dioxide may causeacid rain to form.
Pyroclastic flows
Pyroclastic flows can kill people up to a distance of six to nine miles (10-15km) from the volcano. Lahars are among the most far-reaching phenomena, with deadly effects over a mean distance of more than 12.5 miles (20km).
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Answer:
What are the hazards from volcanoes?
Volcanoes produce a variety of hazards, depending on the chemical composition and gas content of the lava (as well as on other factors)
The most common volcanic gases are water vapour, carbon dioxide, sulphur dioxide, hydrogen, hydrogen sulphide, and carbon monoxide. Some of these gases are irritating or poisonous, orcause breathing problems, and the release of sulphur dioxide may causeacid rain to form.
Pyroclastic flows
Pyroclastic flows can kill people up to a distance of six to nine miles (10-15km) from the volcano. Lahars are among the most far-reaching phenomena, with deadly effects over a mean distance of more than 12.5 miles (20km).