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Explore Everyday Science MCQs by subtopic, with 22748 questions across 25 public practice topics. Choose the area you are studying and work through its multiple-choice questions before moving to a mixed revision session.
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Auguste comte
Explanation The term sociology was first coined in 1780 by the French essayist Emmanuel-Joseph Sieyès (1748–1836) in an unpublished manuscript (Fauré et al. 1999). In 1838, the term was reinvented by Auguste Comte
Steel
Explanation Steel is an alloy of iron (Fe) and carbon (C) , with small amounts of other elements like manganese, chromium, and vanadium. It's a mixture of two or more elements , where at least one is a metal, making it an alloy.
Bacteria on the surface of your skin
Explanation Bacteria on the surface of your skin are an example of a biotic component of the environment. Biotic components are living organisms, including plants, animals, fungi, and microorganisms like bacteria.
Air
Explanation Sound travels slowest in air , with a speed of approximately 343 meters per second (m/s) at 20°C. This is because air is a gas and has a low density and stiffness , which allows sound waves to propagate more slowly through the material. The speeds of sound in different materials: Air: 343 m/s Water: 1433 m/s Wood: 3300-3600 m/s Brick: 4176 m/s Steel: 6100 m/s Diamond: 12000 m/s
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