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Pregunta
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Respuesta correcta
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What is the official scientific term for the material popularly known as 'frozen smoke'? :
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Aerogel |
Who is credited with discovering and first synthesizing aerogel in the late 1920s to early 1930s? :
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Samuel Stephens Kistler |
What was the friendly bet that led to the invention of aerogel? :
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Replacing the liquid in a jellywith gas without collapsing the solid network |
What critical manufacturing step prevents the structure from collapsing during drying? :
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Supercritical drying |
Which solvent is most commonly used in modern industrial rying of aerogels due to its safety and lo :
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CO2 |
Percentage of standard silica volume is composed of empty air? :
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95% to 99,8% |
Why it displays a faint bluish tint viewed against a dark background despite being most transparent? :
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Rayleigh scattering |
What makes aerogel one of the best thermal insulation materials in existence? :
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It nullifies conduction, cenvection and minimizes radiation transfer |
How did NASA utilize aerogel in the famous Stardust mission launched in 1999? :
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To capture interestellar and cometary dust particles without damaging them |
Which specific environmental application highlights aerogel's hydrophobic properties? :
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Absorbing oil spills from water bodies without soaking up water |
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Pregunta
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Respuesta correcta
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What is a major environmental concern regarding the assessment of silica aerogel manufacturing? :
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High energy consumption during the drying fase |
How do modern builders utilize aerogel to conform to rigorous green building codes like LEED? :
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As ultra thin insulating blankets to eliminate thermal bridging |
What regulatory or safety classification applies to handling raw silica aerogel dust in industry? :
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An amorphous silica nuisance dust requiring respiratory protection |
Which future planetary application has been proposed by scientists for aerogel blankets on Mars? :
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Terraforming regions of the planet surface by warming the floor to melt ice |
What happens when unmodified hydrophilic silica aerogel is placed under a running faucet of water? :
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Its internal structure collapses instantly due to capillary forces as it fills with water |
What modification is performed to make aerogel waterproof and useful for outdoor clothing? :
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Chemical functionalization with organic hydrophobic groups (like alkylsilanes) |
What recent aerogel provides flexibility and ruggedness compared to brittle aerogels? :
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Polymer or Cellulose-based aerogels |
In consumer fashion, why is aerogel integrated into extreme-weather jackets and boots? :
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It offers superior cold insulation at a fraction of the thickness of traditional down |
What is the primary barrier preventing aerogel replacing fiberglass in every house worldwide? :
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High manufacturing costs |
Which acoustic property makes aerogels interesting for soundproofing applications? :
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They significantly lower the velocity of sound waves, dampening acoustics |
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