12 Questions
What type of caldera forms when the roof of the magma chamber collapses into the void?
Collapse caldera
Which process describes the alteration of rock composition through chemical reactions?
Chemical weathering
What is the process by which loose sediment is transformed into solid rock?
Lithification
Which agent of sedimentary transport typically results in poorly sorted sediment?
Gravity
What do ripple marks indicate about the sedimentary environment?
Deposition in a current
What do body fossils represent compared to trace fossils?
Evidence of organism activity
What are the three most abundant volcanic gases?
Water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2)
What is the main difference between lava flow and pyroclastic flow?
Lava flows are molten rock moving slowly, while pyroclastic flows are fast-moving currents of hot gas and volcanic matter.
Which type of volcano is mainly composed of fluid lava flows?
Shield volcanoes
What is the main cause of a caldera formation?
Collapse of a volcano's magma chamber during an explosive eruption or after emptying
Which volcanic event buried the city of Pompeii?
Eruption of Mount Vesuvius in 79 AD
What role do volcanic gases play in atmospheric changes?
They contribute to atmospheric changes like global cooling or warming
Test your knowledge on volcanic gases, their effects on the atmosphere and human health, as well as the differences between lava flows and pyroclastic flows.
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