Botany Science Fair Project
Temperature effect on mold growth


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Project Information
Title: Temperature effect on mold growth
Subject: Botany
Grade level: Middle School - Grades 7-9
Project Type: Experimental
Cost: Low
Awards: None
Affiliation: Canada Wide Virtual Science Fair
Link: www.virtualsciencefair.org...
Background

Mold problems occur in airtight homes more frequently in the warmer months (when humidity reaches high levels inside the house, and moisture is trapped), and occur in drafty homes more frequently in the colder months (when warm air escapes from the living area into unconditioned space, and condenses). If a house is artificially humidified during the winter, this can create conditions favorable to mold. Moving air may prevent mold from growing since it has the same desiccating effect as lowering humidity. Keeping indoor air temperature higher than 74 F (23.3 C) also has an inhibiting effect on mold growth.

Some molds can begin growing at temperatures as low as 2C. When conditions do not enable growth, molds may remain alive in a dormant state, within a large range of temperatures before they die. The many different mold species vary enormously in their tolerance to temperature and humidity extremes. Certain molds can survive harsh conditions such as the snow-covered soils of Antarctica, refrigeration, highly acidic solvents, and even petroleum products such as jet fuel.

Bread kept at low temperatures, for example, in a refrigerator, will develop mold growth more slowly than bread kept at room temperature.

For More Information: Mold K-12 Experiments & Background Information

Source: Wikipedia (All text is available under the terms of the Creative Commons Attribution-ShareAlike License)

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