WVGSA Grade 5 Science Practice Questions - West Virginia General Summative Assessment Grade 5 Science Exam

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A volcanic eruption releases ash clouds, lava, and sulfur gases: 1. Lava flows melt mountain glaciers (Geosphere -> Cryosphere/Hydrosphere). 2. Ash clouds block sunlight, lowering regional air temperatures (Geosphere -> Atmosphere). 3. Acidic rainfall damages forest foliage and stream life (Atmosphere/Hydrosphere -> Biosphere). Which scientific principle is best illustrated by these connected events?

Earth spheres function independently without affecting each other. Earth is a system of interconnected spheres where a major event in one sphere triggers a cascade of changes across other spheres. Volcanic eruptions affect only atmospheric air quality. Geosphere changes never influence living organisms.

Correct Answer:

Earth is a system of interconnected spheres where a major event in one sphere triggers a cascade of changes across other spheres.

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