What are the effects of a volcanic eruption on atmosphere composition?
What will be an ideal response?
Answer: Volcanic ash from the eruption creates a cloud like cover, increasing the albedo in the months following the eruption, causing a cooling at the time. The sulfur gases released by the volcano form aerosols in the atmosphere and reflect sunlight, causing cooling. The sulfur can cause cooling for a few years following an eruption.
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Which of the following conditions most likely produces warming at the Earth's surface?
A. an increase in low-level global cloudiness B. a decrease in energy output of the sun C. an increase in high-level global cloud cover D. an increase in sulphur-rich particles in the stratosphere
Which of the following is not evidence of recent activity at a volcano?
A) Thick, well-developed soil B) Layer of ash blanketing hillslopes C) Unweathered lava flows D) Ash flows lacking a well-developed soil
A terminal moraine marks the ____
A)fartherest a glacier can spread from side-to-side B)location where the glacier started to form C)farthermost point of a glacier's advance D)location where outwash forms E)boundary between two glaciers
________ have greater species richness than ________
A) Deserts; tropical rainforests B) Oceans; terrestrial ecosystems C) Coral reefs; other areas of the oceans D) Tropical and subtropical grasslands; tropical rainforests