Science in the News Quiz.Directions: Read the late-breaking science news stories in our Science News section on pages 4-6. Then, test your knowledge by answering the questions below. Circle the correct letter. 1. "Brain fingerprinting "Brain fingerprinting" is a controversial proposed investigative technique that measures recognition of familiar stimuli by measuring electrical brain wave responses to words, phrases, or pictures that are presented on a computer screen. " is more accurate than a conventional lie-detector test, or polygraph An instrument used to measure physiological responses in humans when they are questioned in order to determine if their answers are truthful. Also known as a "lie detector," the polygraph has a controversial history in U.S. law. , because a. a person can't control his or her brain waves brain waves Neurology Oscillations/sec that correspond to various types of cerebral activity, as measured on an EEG. See Electroencephalogram. . b. it doesn't cause emotional stress. c. it uses electrodes. d. brain fingerprinting sees your thoughts in pictures. 2. Fairy penguins wear sweaters to a. stay warm. b. keep from preening feathers. c. avoid ingesting toxic oils. d. all of the above. 3. The world region with the highest number of HIV-infected people: a. Central America Central America, narrow, southernmost region (c.202,200 sq mi/523,698 sq km) of North America, linked to South America at Colombia. It separates the Caribbean from the Pacific. b. North America c. Sub-Saharan Africa d. Southeast Asia 4. Saharan microbes hitchhike hitch·hike v. hitch·hiked, hitch·hik·ing, hitch·hikes v.intr. To travel by soliciting free rides along a road. v.tr. To solicit or get (a free ride) along a road. to Florida via a. dust clouds. b. camels. c. corals. d. hurricanes. 5. Dust creates fiery sunsets because it a. is red. b. is airborne. c. moves quickly. d. absorbs blue light. 6. Teens are more likely to lose sleep if they a. snack before bedtime. b. are stressed over school work. c. don't get enough vitamin C vitamin C or ascorbic acid Water-soluble organic compound important in animal metabolism. Most animals produce it in their bodies, but humans, other primates, and guinea pigs need it in the diet to prevent scurvy. . d. stay focused on schoolwork. 7. Sleep loss can impair the ability to a. reason. b. hear. c. eat. d. talk. 8. What may have caused the woolly mammoth's extinction? a. meteor crash b. clashes with dinosaurs c. human hunters d. drowning in floods 9. A new T-shirt supplies vitamin C when provitamin provitamin /pro·vi·ta·min/ (-vi´tah-min) a precursor of a vitamin. provitamin A usually ß-carotene, sometimes including any of the provitamin A carotenoids. in the material interacts with a. skin-chemicals. b. enzymes in saliva. c. heat. d. laundry detergent. 10. A good source of vitamin C: a. potato chips b. bologna c. mayonnaise d. citrus fruits Take It Further 11. How many hours of sleep do teens need? Why? How many hours on average do you sleep? Why? 12. How does your body react when you tell a lie? For example, do you sweat, blink, or stare at the floor? Why? |
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