Spent fuel from a nuclear power plant cools down and loses most of its radioactivity through decay. In the first year, spent fuel loses about what percentage of its radioactivity? w) 10 percent x) 50 percent y) 80 percent z) 100 percent

Spent fuel from a nuclear power plant cools down and loses most of its radioactivity through decay. In the first year, spent fuel loses about what percentage of its radioactivity? w) 10 percent x) 50 percent y) 80 percent z) 100 percent
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ANSWER: Y -- 80 PERCENT
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In the Tyndall Effect, the intensity of scattered radiation is inversely proportional to the fourth power of the wavelength. Which one of the following colors of light would exhibit the most intense Tyndall scattering? w) yellow x) green y) orange z) violet

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What power cycle is used in jet engines? w) Stirling x) Rankine y) Otto z) Brayton

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What range of frequencies are usually referred to as audio frequencies for humans? w) 0 to 20 Hertz x) 20 to 20,000 Hertz y) 200 to 200,000 Hertz z) 10,000 to 30,000 Hertz

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Who was the first scientist credited with pointing out that certain gases could cause a greenhouse effect? w) John Tyndall x) Charles Darwin y) Roger Tory Peterson z) Stephen Jay Gould

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The first animal launched into orbit was a: w) mouse x) monkey y) chimpanzee z) dog

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The first American Astronaut to ORBIT the Earth was: w) Alan Shepard x) John Glenn y) Gus Grissom z) Scott Carpenter

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