Unit 1 Great Scientists课件（PPT 51页）.ppt

Unit 1 Great scientists 天马行空官方博客：/tmxk_docin ; QQ:1318241189 What happened? Severe?Acute?Respiratory?Syndrome 严重急性呼吸道综合症 Is it terrifying? Now please talk with your neighours: What did you do facing SARS? How about others? And what should be done? Disinfection Hygiene(卫生保健) Mask Who can help us? Heroes-- Scientist Do you know other scientists? Try your best. And discuss with your neighbours. The more, the better. The following is a quiz and let’s find out who knows the most. Quiz 1 Which scientist discovered that objects in water are lifted up by a force that helps them float? Archimedes Ancient Greek (287-212BC) 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. The force of the water pushing it up is the same as the weight of the object. buoyancy Quiz 2 Who wrote a book explaining how animals and plants developed as the environment changed? Charles Darwin Britain (1808-1882) The Origin of Species Quiz 3 Who invented the first steam engine? Thomas Newcomen British (1663-1729) Quiz 4 Who used peas to show how physical characteristics are passed from parents to their children? Gregor Mendel Czech (1822-1884) Quiz 5 Who discovered radium? Marie Curie Polish and French (1867-1934) Quiz 6 Who invented the way of giving electricity to everybody in large cities? Thomas Edison American (1847-1931) Quiz 7 Who was the painter that studied dead bodies to improve his painting of people? Leonardo da Vinci Italian (1452-1519) Quiz 8 Who invented a lamp to keep miners safe underground? Sir Humphry Davy British (1778-1829) Quiz 9 Who invented the earliest instrument to tell people where earthquakes happened? Zhang Heng Chinese (78-139) Quiz 10 Who put forward a theory about black holes? Stephen Hawking British (1942-) Is SARS terrifying? Cumulative number of cases all over the world - 8096 774 of which died Case fatality ratio (%) 9.4 /csr/sars/country/table2004_04_21/en/index.html Are there mor