Passage:
Grain stored in large metal silos retains summer heat in the center of the grain mass while the outer walls cool rapidly in autumn weather. This temperature difference causes warm, humid air to rise through the middle and condense upon meeting the cold metal roof, dripping water onto the top layer of grain. To prevent surface mold from ruining the harvest, silo operators run exhaust fans that force air through the container until internal temperatures are completely uniform.
Based on the passage, stored grain can suffer moisture damage even if the silo structure is completely sealed against outside rain.
Answer: Answer
Answer
True, because the passage demonstrates that moisture forms internally from warm air rising and condensing on the cold roof, meaning external rain leaks are not necessary for grain spoilage to occur.
The statement is true because the passage describes how internal air convection creates condensation on the cold ceiling independently of any external rain entering the structure.
Step-by-Step Solution
Key Concept
Deducing unstated causal implications from technical descriptions of internal physical processes.
Estimated Time:45s