Science news.DIRECTIONS: Read the Science News section on pages 4 to 6. Then, test your knowledge by filling in the letter of the correct answer below. 1. To leap across the Great Wall of China, skateboarder Danny Way Danny Way (born April 15, 1974 in Portland, Oregon) is a professional skateboarder. He rode for Powell Peralta in the late 1980s. He was featured, with Chet Thomas, in very short segment in the Powell video "Public Domain. started high up on a J-shaped ramp to build up (A) drag. (B) gravitational grav·i·ta·tion n. 1. Physics a. The natural phenomenon of attraction between physical objects with mass or energy. b. The act or process of moving under the influence of this attraction. 2. potential energy. (C) kinetic energy kinetic energy: see energy. kinetic energy Form of energy that an object has by reason of its motion. The kind of motion may be translation (motion along a path from one place to another), rotation about an axis, vibration, or any combination of . (D) vertical speed. 2. Because Way had a lot of --, it helped him fight gravity's tug and stay in the air for a longer period of time. (A) drag (B) gravitational potential energy (C) friction (D) upward speed 3. Which of the following do scientists NOT know about the newly discovered planet? (A) It has three "suns." (B) It is a gas giant. (C) It is outside the solar system solar system, the sun and the surrounding planets, natural satellites, dwarf planets, asteroids, meteoroids, and comets that are bound by its gravity. The sun is by far the most massive part of the solar system, containing almost 99.9% of the system's total mass. . It has minerals similar to the ones found on Earth. 4. Life as we know it Life As We Know It is an American television drama on the ABC network during the 2004-2005 season. It was created by Gabe Sachs and Jeff Judah. The series was based on the novel Doing It by British writer Melvin Burgess. would be impossible on the new planet because it's too (A) far from our solar system. (B) cold for organisms to grow. (C) far from its nearest star to obtain energy for photosynthesis. (D) hot for life to survive. 5. Normally, baseball players have a hard time seeing a fastball because (A) an oncoming speeding object tends to trigger a person's reflexes to blink. (B) the white ball blurs against other distracting colors in the stadium. (C) the brain cannot signal a player's visual functions fast enough. (D) the white ball reflects too much sunlight. 6. MaxSight contact lenses help a baseball player see a fastball better because the lenses (A) enlarge the eye pupils, helping the player see the while color more intensely. (B) help keep the player's eyeballs front moving around. (C) filter out visible light waves with short wavelengths. (D) block out visible light waves with long wavelengths. 7. When wearing the "Square Eyes" shoe insert, every--steps you take earn you--of TV-watching time. (A) 50, 1 minute (B) 85, 3 minutes (C) 100, 1 minute (D) 100, 5 minutes 8. Which of the following activities burns the most calories per hour? (A) walking (B) swimming (C) biking (D) jogging 9. Global warming has caused glaciers in Switzerland This is a list of the glaciers in Switzerland. It includes the glaciers' lengths in 1850 and 2002, as well as the canton of Switzerland in which it is located. Name 1850 Length (km) 2002 Length (km) Area km² Canton Allalin 7.6 6. to lose about--of their surface area in the last--years. (A) one fifth, 15 (B) one quarter, 10 (C) one third, 15 (D) two thirds, 5 10. A plastic wrap used to cover parts of the Gurschen glacier kept the ice underneath cold by (A) reflecting the sun's rays. (B) absorbing the sun's rays. (C) spreading a chemical antifreeze antifreeze, substance added to a solvent to lower its freezing point. The solution formed is called an antifreeze mixture. Antifreeze is typically added to water in the cooling system of an internal-combustion engine so that it may be cooled below the freezing point . (D) keeping the meltwater melt·wa·ter n. Water that comes from melting snow or ice. meltwater Noun melted snow or ice Noun 1. from leaking out. ANSWERS 1. b 2. d 3. d 4. d 5. b 6. c 7. c 8. c 9. a 10. a |
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