教学ppt课件 Unit1 Great Scientists Reading.pptVIP

Unit 1 Great Scientists Reading Scientists: Alexander Bell electricity Thomas Edison the First telephone Wright Brothers the electric Lamp Madame Curie black holes in Universe Franklin Theory of Gravity Steven Hawking the First Plane Elbert Einstein Radium Isaac Newton the Theory of Relativity Scientists Contributions: Archimedes (阿基米德) Warming up: 1. Which scientist discovered that objects in water are lifted up by a force that helps them float? Ancient Greek (287-212BC) A mathematician Charles Darwin 2. Who wrote a book explaining how animals and plants developed as the environment changed? the Origin of Species Warming up: “father of modern biology” 3. Who invented the first steam engine? Thomas Newcomen, British (1663--1729) He improved the first steam pump built by Thomas Savery in 1698 and turned it into a steam engine for taking water out of mines in 1712. James Watt improved it still further in the 1770s Thomas Newcomen Warming up: Gregor Mendel, Czech (1822- 1884) He grew pea plants and developed ideas on heredity(遗传学) and inherited (继承,承传) characteristics. Between1856-- 1863 he grew 28,000 pea plants. Gregor Mendel 4. Who used peas to show how physical characteristics are passed from parents to their children? Warming up: Marie Curie Warming up: 5. Who discovered radium? 6. Who invented the way of giving electricity to everybody I large cities? Thomas Edison Leonardo da Vinci 7. Who was the painter that studied dead bodies to improve his painting of people? Warming up: Sir Humphry Davy, British (1778- 1829) He did research into different gases and discovered the medicinal value of nitrous(含氮的) oxide(氧化物) (or laughing gas) as an anaesthetic(麻醉剂). In 1815 he developed a safety lamp for miners. Humphry Davy 8. Who invented a lamp to keep miners safe underground? Warming up: Zhang Heng, Chinese (78- 139) He invented