Volcanoes - Earth's Fiery Power
Most volcanoes exist along the edges of tectonic plates - Leaving Cert Geography - Question A - 2017
Question A
Volcanoes - Earth's Fiery Power
Most volcanoes exist along the edges of tectonic plates. About 90 percent of all volcanoes exist within the Pacific Ring of Fire.
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Worked Solution & Example Answer:Volcanoes - Earth's Fiery Power
Most volcanoes exist along the edges of tectonic plates - Leaving Cert Geography - Question A - 2017
Step 1
What percentage of volcanoes exist within the Pacific Ring of Fire?
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Answer
90% of volcanoes exist within the Pacific Ring of Fire, indicating a significant concentration of volcanic activity in this region.
Step 2
State what is meant by the name Pacific Ring of Fire.
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Answer
The Pacific Ring of Fire refers to a horseshoe-shaped zone around the edges of the Pacific Ocean characterized by frequent earthquakes and numerous volcanic eruptions.
Step 3
Name two materials that are emitted into the air when volcanoes erupt.
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Answer
Two materials emitted during volcanic eruptions include ash and gases such as sulfur dioxide.
Step 4
Explain briefly what is meant by the term extinct volcano.
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An extinct volcano is a volcanic structure that has not erupted in a very long time and is not expected to erupt again in the future.
Step 5
List two negative effects of volcanoes.
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Destruction of property and infrastructure caused by lava flows and ash fall.
Health hazards from ash and toxic gases released into the atmosphere.
Step 6
Explain briefly one positive effect of volcanoes.
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One positive effect of volcanoes is the creation of fertile soil, which can enhance agricultural productivity in volcanic regions.
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