tailieunhanh - Acing The Gre phần 7

Tham khảo tài liệu 'acing the gre phần 7', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | GED SCIENCE PRACTICE QUESTIONS 47. What can the student conclude from the data a. The greater the radius of the container the lower the rate of evaporation. b. The greater the radius of the container the higher the rate of evaporation. c. The radius of the container is not related to the rate of evaporation. d. The greater the radius of the container the slower it reaches the set temperature. e. The smaller the radius of the container the faster it reaches the set temperature. 48. Which two statements are valid objections to the experimental setup I. All the containers were filled with the same amount of water. II. A different hot plate was used to heat water in different containers. III. Water in different containers was heated for different amounts of time. IV. The containers were not filled completely. a. I and II b. I and III c. I and IV d. II and III e. II and IV 49. The following graph shows how the concentra- tion amount per unit volume changes with time. What information can be obtained from the data Concentration of a Reactant time. e. At 300 seconds the concentration of the reactant is at maximum. Questions 50 and 51 are based on the following passage. Is Pluto a Planet Based on perturbations in Neptune s orbit the search for a ninth planet was conducted and Pluto was discovered in 1930. Pluto orbits the sun just like the other eight planets and it has a moon Charon and a stable orbit. Based on its distance from the sun Pluto should be grouped with the planets known as gas giants. In addition Pluto like the planet Mercury has little or no atmosphere. Pluto is definitely not a comet because it does not have a tail like a comet when it is near the sun. Pluto is also not an asteroid although its density is closer to an asteroid than to any of the other planets. Pluto is a planet because it has been classified as one for more than sixty years since its discovery. 50. Which argument supporting the classification of Pluto as a planet is the weakest a. Pluto .