Pre-Lab Quiz 8

Pre-Lab Quiz 8 - Ultraviolet lamps cause damage because...

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http://chemmac1.usc.edu/cttccgi/randquiz.cgi 1 of 2 Web Quiz You can login to this page multiple times but you cannot take the quiz more than once. . Submit your answer for grading by Clicking on the "Grade Answers" button at the bottom of the page only when you are sure of your answers. Question # 1 A properly functioning laboratory hood is one that a. has the highest airflow b. causes a piece of paper held to the sash to flutter in the breeze. c. can be visually inspected. d. has both adequate airflow and the absence of excessive turbulence. e. has the greatest amount of turbulence. Question # 2 When you are in a hurry, the best tool to slow down and stop a centrifuge is a. your finger b. the palm of your hand c. a pencil d. a test tube e. the braking mechanism provided by the manufacturer of the centrifuge. Question # 3
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Unformatted text preview: Ultraviolet lamps cause damage because they emit high energy photons. What is the correct relationship between the photon wavelength and the photon energy? a. The longer the wavelength the higher the energy. b. The shorter the wavelength the lower the energy. c. The shorter the wavelength the higher the energy. d. The energy of the photon depends only the number of photons. Two http://chemmac1.usc.edu/cttccgi/randquiz.cgi 2 of 2 photons with wavelengths of 200 nm will have a lower energy that one photon of 500 nm. e. There is no relationship between wavelength and energy. Question # 4 The term "cryogenic" means a. bacterial genetic material b. of or relating to low temperatures c. the origins of cystoscopy d. materials that cause crying e. materials that cause tears to form Grade Answers...
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This note was uploaded on 08/21/2008 for the course CHEM 105BL taught by Professor Warshel during the Spring '07 term at USC.

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Pre-Lab Quiz 8 - Ultraviolet lamps cause damage because...

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