(
课件网) Unit 1 Great scientists Warming Up & Reading (Ⅰ) Learn more about some great scientists and their achievements in the world. Learn how to prove a new idea in scientific research. Practise reading comprehension. Learning aims Do you know the following scientists? The following is a quiz and let’s find out who knows the most. Let’s have a competition! Leading-in 1. Which scientist discovered that objects in water are lifted up by a force that helps them float? Charles Darwin B. Archimedes C. Thomas Edison Ancient Greek. He was a mathematician. He found that if you put an object into water, the water pushes the object up. It rises and partly floats. Archimedes (287 B.C.–212 B.C.) 2. Who wrote a book explaining how animals and plants developed as the environment changed? A. Marie Curie B. Gregor Mendel C. Charles Darwin Britain naturalist. The Origin of Species was published in 1859. It explained how plants and animals had changed over time to fit in with a changing environment. His book showed that people had developed from apes. Charles Darwin (1809—1882) It is not the strongest of the species that survive, but the one most responsive to change. ———Charles Darwin ???? 物竞天择，适者生存。???? 3.Who invented the first steam engine? Thomas Newcomen B. Archimedes C. Thomas Edison Thomas Newcomen (1663—1729) British. He improved the first steam pump and turned it into a steam engine for taking water out of mines in 1712. 4. Who used peas to show how physical characteristics are passed from parents to their children？ Thomas Edison B. Gregor Mendel C. Archimedes Gregor Mendel (1822–1884) 5. Who invented the earliest instrument to tell people where earthquakes happened? A. Charles Darwin B. Zhang Heng C. Watt Zhang Heng, Chinese( 78–139) He invented the first seismograph to indicate in the direction of an earthquake. It was in the shape of a cylinder with eight dragon heads round the top, each with a ball in its mouth. Around the bottom were eight frogs directly under a dragon’s head. When an earthquake occurred, a ball fell out of the dragon’s mouth, making a noise. Do you know how to prove a new idea in scientific research? seven stages Discussion Do scientific research (The process) 发现问题 提出假设 思考方法 收集资料 分析结果 寻找证据 得出结论 Find a problem Make a question Think of a method Collect results Analyse the results Find supporting evidence Draw a conclusion THINK WORK FIND SOLVE John Snow British ( 1813–1858) A legendary(传奇的) figure in the history of public health, epidemiology（流行病学） and anesthesiology(麻醉学). Reading John Snow defeats “King Cholera” (霍乱王) O-157型大肠杆菌 What is Cholera? It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat. It begins in the stomach and a severe case can lead to death without immediate treatment. And the victims died ver ... ...
