TAILIEUCHUNG - Societ english5

Tham khảo tài liệu 'societ english5', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | HISTORY AND NATURE OF SCIENCE shake the foundations of understanding and lead to new modes of thinking. Thomas Kuhn philosopher of science called such discoveries paradigm shifts. Here are some major advances in science. 420 . Hippocrates begins the scientific study of medicine by maintaining that diseases have common causes. 260 . Archimedes discovers the principle of buoyancy. 180 . Galen studies the connection between paralysis and severance of the spinal cord. 1473 Copernicus proposes a heliocentric system. 1581 Galileo finds that objects fall with the same acceleration. 1611 Kepler discovers total internal reflection and thin lens optics. 1620 Francis Bacon discusses the principles of the scientific method. 1687 Newton formulates the laws of gravity. 1789 Lavoisier states the law of conservation of energy. 1837 Darwin uses natural selection to explain evolution. 1864 James Clerk Maxwell shows that light is an electromagnetic phenomenon. 260 CHAPTER 29 Tips and Strategies for the GED Science Exam IN THIS chapter you will briefly review some tips you can use on the GED Science Exam. Several tips apply to other sections of the GED as well. NOW THAT YOU have reviewed the information you need to know it s time to think about strategies you can use at test time. Throughout this chapter you will review the structure of the science exam and learn specific tips you can use to improve your score on the test. Read this chapter carefully and then review your notes from the science section. When you are ready move on to the practice questions that follow. Multiple-Choice Questions The good thing about multiple-choice questions is that the answer is right in front of you. All you need to do is find it or at least eliminate some of the clearly wrong choices. At times you may not be able to eliminate all four of the incorrect choices. But there is no penalty for guessing on the GED. If you can eliminate one of the wrong choices you will have a 25 chance of guessing .

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